Would totally be interested, if it weren't only on Steam. Like, why the hell would I want Adult games plastered on my library and for anyone to see I played or own one? And I'm not about to log out and into steam just to go to "Private" steam accounts without friends.
Don't get me wrong though, I appreciate that such games can be obtained on Steam and I'm happy to see it encouraging "Adult Games" that are actual games and of decent quality instead of the constant RPG maker, visual novel, or flash games.
Steam is just not great with boundaries.