Will this game proceed with the male protagonist always doing his days out in front of the female protagonist, or will that switch up so that she gets the first move too? I think the best way it could be done is if it goes like this:
0.1 male 1st have of update female 2nd half of update
0.2 female 1st half of update male 2nd half of update.
0.3 male 1st have of update female 2nd half of update
0.4 female 1st half of update male 2nd half of update.
and so on...
So it's balanced and they are taking turns on who is the one being reactive to the actions of the other.
I think 0.1 was just proof of concept and I suspect she wanted to somehow prank the players into thinking that the game has 1 MC only (Ian) and then playable Lena was a sort of insurance for those who fell for it.
I'm okay with 0.1 and 0.2 updates happening the way you mentioned because restructuring 0.1 would probably take quite a while from the time she could use on other updates. I'm also certain that 0.2 will have Lena's perspective first because Eva probably got the script for it ready, and she likes to have variety herself. I doubt she would want Lena to feel like a secondary character all the time.
But other updates should mix them up and merge them into a singular sequence.
0.3: 1 - Ian build-up, 2 - Lena build-up, 3 - both Ian and Lena co-op (cafe scene or a date), 4 - Lena, 5 - Ian etc.
You get the idea. Separating the game into 2 different MC parts feels artificial and repetitive in the scenes where both of them are present. I hope patrons could relate this message to her so she's aware of it. BTW is there a way to reach her other than being her Patron?
Also, that's just my nit-picking but I feel like the game sort of encourages Lena to score more Lust points than Ian. In my playthrough, I had 0 Lust points as Ian. All the Lust bonuses for him require ether to jerk off or act pervy like a pathetic teenager while Lena's bonuses feel natural and require her to act either brave or seductive. Why not allow Ian to flirt with girls (Alison and Holly are obviously into him) or somehow make Lust bonuses feel more natural as well? The pool game with Cindy and Wade had the limitless potential for Lust bonuses. Maybe act like a noob and ask Cindy for more close and personal tutorial with body contact? Or if you play with Wade against Cindy joke about double-teaming her? "Are you sure you could handle both of us?" Obviously male sexuality is underappreciated but if he can't try himself in being the next nude model for painters, maybe allow him to have more fun and act naughty without coming off as a creep.