I'm outta reacts, so a quick reply, I mostly agree, but with Nami, the important part of her path is the uncertainty that she isn't alone, and that she is masking herself because Nika is 'more' damaged. She's hiding from those closest to her, hiding her feelings and her extroversion is a form of masking.
The important things that were lost (in my opinion) were the morning after bed scene, because it shows she's trying so hard to be the master pervert and gross him out (just like she does with the espresso, she has to be more extreme to prove she belongs) and the way the discussion when she found out about Nick went, I think the rework is more appropriate, but loses the raw vulnerability there. After the rework, instead we have Nami not snitching Nika out if you go on the heist, showing how she'll even cover for his bullshit, and has his back even when she's angry at him, and we have the talk on the bike that shows a vulnerability as well as revealing a plot point - Nika has some form of criminal record.
The other thing we gain is seeing that so much of Nami is an act she's switching between two different personalities, and Nika recognises it, as she's been put in a situation where she finally has to share Nika with other girls. She's not used to it, and she didn't cope with sharing it when Summer was around. Most of Nami's uncertainty stems from her relationship with Nika. It makes her pulling away when he comes on strong more believable, especially as she's seen how all the other girls are reacting to him. Previously her reticence after the kiss and in Ch5 felt like a pulling back from her character, After all, up to that point she's the one agressively arguing agains people's opinions, and being the courageous one. Now to me it feels like a linear escalation of the indicisive and uncertain tendencies I've seen from start to finish, she doesn't know what she wants, or won't admit it.
I don't mention the spa, simply because I personally saw it as fan service rather than a genuine lewd from the story progression. I know a lot of europeans have the public bathing nudity thing going on, but a sex act at that time in someone else's house when you're trying to make a good impression? It was a lewd for the sake of having a lewd in the game, we already know from the lake Nami can get him chubby. I have no problem with that, but I do believe the bathroom scene will be far more interesting, and easier for them to hide from Zara/Vanessa/Mila. Scratch that, there's no hiding from Vanessa.
So we win and lose. The loses can be added back in in future chapters in different scenes. There will be equivalent moments to build raw vulnerable moments - Nami's tears when she's overwhelmed when you chose her path is far more raw and vulnerable than the earlier scene. I'm also not denying that for some people these scenes were important, but in the terms of a story arc with 80% left to go, I think they're actually minor and can build more naturally over the next 80%, even if some lovely moments disappeared.
Works in progress are very much a play at your own risk thing.
Edit:
Reaction limit: Exactly, well put. Lewd action figure Nami I found unattractive, current Nami I feel more protective of and more attracted to. But it's a personal reaction.
I will just make a quick response to clarify some of my ideas, but I don't think that there is a right way of view this issue, as is mostly character interpretation and it does not have a right interpretation just different takes. There is some time since I played the OG chapters 1 - 3.5, but I quite disagree that the jacuzzi scene was a lewd for the sake of lewd and I am not talking about the ass grading but the moment after that when Nika starts to take initiative and Nami backs way. every time Nami pushes the line is under a pretext, she is never openly trying to seduce Nika, she is ever just wanting to help or wanting comfort and two things can be true at once, she does want this things but she takes advantages of this situations to get him where she wants him to be.
This showcased the darker side of Nami's character. Oh you are with Bella, I will help to learn how to eat pussy. Oh I am so sad, hug me when I am top less. Let me sit on you lap while naked because bubbles. Oh let me see if I can give you a boner. There is much more interactions, the main point is that Nami was playing a game because she felt she had control over the situations and she had a deniability to herself that she was only being a good roommate and there is nothing wrong with it. The Jacuzzi scene is the high point of this interactions, one as you said because was the absolutely the worst moment to do so, it take things way too far and if the player chooses Nika takes control. Is not - in my mind - a coincidence that after this is when Nika changes his perception over Nami, her hard work payed-off.
Nami before was never unsure of what she wanted, she was just afraid to openly take the first step, so she acted under (somewhat) falses pretenses and pulled out before things get too real. That is why Nika initiative is such a big deal, she can't continue as she was before and now she has to openly said that she want this or walk away, in the last scene she say that she don't have the courage to take the first step and lets Nika decide if he you be the one to start a race of impossible odds. All of this loses its impact in S1 because Nami character was toned down, she is not as pushy, she is not as aggressive or mean, it is not ruined but I don't feel it recache the same notes as before.
Now the rework has its strong points also, I also prefer the talk when you don't go to Bella do the heist in the new version and some other moments. I agree about Nami masking herself to "protect" Nika and that there is some things that could be added in the future but I also feel that it hurt the progression of Nami path in S1. I could delve deeper in it but it is quite a long text already and is mostly different takes over a character, people interpret things differently and that is alright. "New" Nami work best to you, for me I can't shake the felling that something was lost.
Previous Nami: A quirky girl with a high libido who knows how to turn a man on, isn't shy about getting close and pushing boundaries with the guy she likes. She can easily watch porn with him, offers to teach him how to sexually satisfy Bella, can easily pet and French kiss him while waking up half naked in the same bed. Tells her friend Nia at the gym that she has no sexual experience. Says she's a virgin at the movie night with Vic and Mila.
Today Nami: A quirky girl with a high libido who is just learning how to turn a man on, wants to get closer to the guy she likes, and is testing the waters by pushing the boundaries a little. She seems to be slowly being guided by her more sexually experienced friend Nia, so she cautiously tries new things with Nika, without yet making it an outright invitation to fuck her right away. Tells Nia at the gym that she has no sexual experience. Says she's a virgin at a movie night with Vic and Mila.
I don't know, I'm fine with both options, but I think the previous Nami is more of a lewd game character.
While I don't think that "old" Nami is a perfect character and some toned down was for good, I don't think that either of this representations are very accurate. I made my case over "old" Nami in my response to Bob, so here I will just elaborate as to why Today Nami falls a little short of the Previous one.
The main reason is that I don't think that Nami was thought out as this tamed version, this may be the case now, but it was not when the first chapters was released so Ocean tried to connect slightly different characters together. Along S1 Nami was constantly pushing boundaries physical and emotional, be it making jokes or siting on Nika's face and all this reaches its peak when Nika takes initiative, that makes sense as Nami was teasing him for 5 chapters, even a limp dick emo will do something if you try hard enough. With less teasing and pushing boundaries the jacuzzi scene, that still happens it just is not showed, the change of perception, the kiss, some of the Nami's jokes and her motivations suffers, is not ruined but don't quite fit together as it did before.
Of course we can disagree, and that is fine by me. As I have said is mostly different takes and people interpret things differently, as it is now is fine. I don't hate it, I just can't say that I like it more.