Hi there, I just finished playing the current iteration of the game, and I really do enjoy it (even tho I'm disappointed Mei isn't one of the potential end love interests) and I in by no means want to sound like I'm criticizing you or anything, I really did enjoy the game.
But, it's hard for me to agree with the fact that if there was a harem ending, Jensen would lose his character or credibility. There doesn't seem to be any character development for Jensen that shows he isn't ok with being with multiple women. Hell he's dating a mother and daughter at the same time! I understand not having a name change, as the story seemed to have divulged into multiple povs rather than just Jensen's POV.
Also to touch on the harem/incest point of not making sense at all. I honestly wouldn't feel that way if incest was in the game, with Amber or Jensen's niece. If anything, with all the "omg he's so handsome, he looks so good" followed with the so many fuck me eyes directed towards Jensen, it felt like incest was going to be a legit part of the story for a while. Honestly disappointed there isn't any, but that's just my personal thing. However, here it feels like you omitted the whole harem/incest thing trying NOT to be like other VN's, rather than it not making sense story wise. Not that that's a bad thing, harem/incest is definitely overdone on this site, and most of it doesn't even make sense. For this game though, it would have actually made sense for me based on how I read through the story, and it could have added so many layers to a story that seemed to be already putting down the stepping stones for the story to get to that point.
Again, I don't want to seem like I'm criticizing you or anything, I actually really enjoyed the story. I just don't think, based on how the story was written, it gave off the vibes of "Jensen hates harems/incest. It's not part of his character!" I understand that's how you meant his character to be, but that didn't really come off that way to me as a reader/player.