I always want to add more content for everybody, but "what?" is the question.
Since Sylvia has lines about wanting to "boss around" male elves, you could have her be dominant in the love route and submissive in the slave route. I think Sylvia is the hottest character in the game.
Which says a lot cause all the characters are hot, it's a great game! I started playing it 5 days ago and it's waay better than other games of the same kind. I'd support you on patreon, but I'm unfortunately broke •~•