There are a lot of points here so I'll try to answer a few.
-> it will stay for free, unless by some miracle they change it to allow to be published on Steam, which they won't
-> there will never be a perfect compromise for everyone between freedom and forced routing. Some want total freedom in all their choices, while many others hate that it and don't want 50 saves for each and every option. Considering each pathing increases difficulty in writing, I try to strike some kind of balance. I already think I have more pathing than many similar games
-> I don't think kissing is an issue, some people express their appreciation that way, like on the cheek. Naturally, the actual real sexual content can be denied. Unless you are already deep into a characters route, because, well, why would you decline then 😁
-> well preferences again, can't satisfy everyone. But no, I am not crazy enough to render each and every one of the renders and animation depending... Which dick size you selected? That'd be an absolute huge task later in the game. I might make such double renders for some special case like "choose which outfit a girl will have in one scene", but as it says, only for one specific scene/s, not for whole game
-> I don't drink much either, but it's an university setting and there will be even more parties and drinking later. It's part of the setting
I think your game is perfect enough with the routes, I'd rather just options NOT to do things rather then add so may convoluted things (but I get it maybe some of those things are involved in the future so they would have to happen then fine)
PP size: You could make the size normal for most people don't have a huge one.... Why not make the small one in addition to that large one we already have. I don't know much about making games but it seems like it would be easier than making all of those additional routes and stuff especially since you have so many booty images and other images I don't see how it would be so difficult (couldn't you literally just keep the same image and shrink the size down OR as a fun thought can the other male characters end up with the girl you didn't choose and we can have a side story of them and they could have different sizes?)
IS this game about 50 percent completed? more or less?
I haven't read all the patch notes and stuff but also what is you favorite character since you are the creator? Is it Selena? She seems to have the most sexual and a sex scene so far as well (And I do like the fact we can decline or accept sex BUT also know kissing can be cheating as well... like I literally have not had a hug in real life in over 10 years LITERALLY so I would consider hugging to be cheating as well... So for me I don't know how to accept being so close to all the characters without feeling like I am somehow cheating in a single playthrough if that makes sense?)