I would like to see a return of more diverse romance options when it comes to sexual orientation. Having ALL the romance options be bisexual just feels lazy to me. Not everyone you meet will be bi, so it stands to reason that some of character will be straight, some will be bi, and others will be gay. This will force the player to play through more then once in order to experience all the romance options.
I would also like one of the romance options to be gay, either a female character who will only sleep with another female, or a male who will only sleep with a male.