I guess there my idea would help. Add the ability to create your own character as good as possible. Even if you just mostly retexture something and maybe later be able to import models.That's fair, though the main reason I was thinking she'd be a good addition is her body type being uncommon when it comes to fursonas/OCs.
Would help both parties. Those who want characters like you suggest and those who want their own character in it. I myself dislike watching others OC's bang in general. If i have to watch such stuff i prefer them to be "nameless" or generic so you can kind of imagine yourself as him or someone.
That's not meant to say anything bad about people who enjoy watching others plow, but i can't really muster any sexual arousal from that myself. If anything it causes the opposite to happen.
So yeah. Having your own characters or OC's in there would help greatly for many people. But i agree with the others. If they only add characters, i would prefer them not to be "popular". Simply because i have a feeling you walk a fine line of building an exclusive world for people that are only popular enough to be added in these games.