What I also would like to see more of, is romantism. I feel like you should have the choice, to make the relationships with the girls more lovey-dovey even in the sharing route. Only then, the sharing really hits as hard, I think >.<
I get why you would hold back with it though, since that would be the whole appeal of playing the no sharing route. Then again, this IS a game all about sharing, so I'm unsure if scraping the routes alltogether, wouldn't be the better choice here. But that's your decission, I hope one can follow my though process behind this idea at least.