I think Astarion is there specifically because he can't say no. The player has the opportunity to be an abuser or feel horrible later on. To me, it's icky. But so is ascending Astarion, and many players choose that.

Originally Posted by Netav
And who would you chose for that? As Shadowheart romancer I'm fully against adding in there too.

Fandom aside, Shadowheart comes from a background of "short term amusements" and really doesn't care.
Lae'zel comes from a society where sex isn't even for breeding purposes, and propositions the player early on.
Karlach is "pent up" and has said she wants to make up for lost time.

Would those be romances? Probably not, given where they are with a romances by then, but they should IMO be open to flings.

I do think they missed an opportunity with Wyll to make him a bit spicier. He flirts with everyone and is attracted to Halsin. But as he is written now, it really wouldn't make sense to shoehorn it in.