Well its your game, but imo the Loyalty thing is just...not fun gameplay. You are talking like the sandbox and VN modes are like two different options but they are not. Like the player is forced into the sandbox mode, you can lose Loyalty almost immediately just by looking at some chicks boobs and you are just fucked from a story standpoint after that? Kind of seems insane to me.
This is my first playthrough of the game, and for me there was zero indication that loyalty would be the driving force of the game. If anything for me it felt like the opposite, that the player is supposed to be moving on with their life and getting over the past.
From how you are posting it seems like the sandbox is all non cannon stuff...which is just baffling to me. If its non cannon, dont force the player to do it.
Is your intended way to play the game to just have players ignore everyone? Never see any content in the game? Because thats how it feels. That there is your "correct" way, which is pure loyalty to a girl not in your life anymore, never even looking at another girl. Or the "wrong" way which is getting over the past, having new relationships but never being able to move on in the main story.
And again, locking events behind corruption levels or loyalty levels without the ability to go back and get the scenes again is just a mistake. If the best way to play the game is to use a mod, then something was done wrong. You shouldnt be able to accidentally trigger a scene that you dont have the requirements for and just lose it forever.
No no no no and no.
You're missing it ,the sandbox itself has story too.. you can ignore the "canon story" that requires loyalty and still have straight up endings with the sandbox girls.
The canon story revolves around it being a full vn mode like the prologue , so girls like lana , and the rest in the game's cover and more if you see are story exclusives to that mode.
Sandbox you can keep your loyalty too , girls like jane , kimiko , rachel are also there.
Loyalty is a factor of kiara as well , I don't wanna spoil too much but for example during quests even if your loyalty is high then kiara appears within events telling you the girl you're hanging out with is good for you for you or not as well.
You wanna go corrupt route , you can , no stopping there and it'll keep going until she's on your dick.
So just to tldr it
The sandbox itself has various endings depending on which girls you keep going for and with them ,
There are then girls you can covnert into romance as well
then there are girls who will corrupt you
All of this is sandbox , you do not need loyalty for this but you do need corruption to be less in case of girls like zoey jane kimiko and rachel.
Also I said it already I'm not sure why you're not noticing but we give ultimatum options , once you visit megan it is evidently clear that she is a corruption girl, now in next updates we'll give that ultimatum for you to decide whether you stop this or go ahead with it.
Mod will only ruin your story flow , nothing stops you from it otherwise.
An example of this can be..
Grabbing claire's ass in a photoshoot and then being sad in a therapy doesn't make sense.
It's done in order to make the game to have consequences based on your choices.