I have plans for making the character customizable in the second Era forward.
Unlocking outfits for:
-the factions you join
-the relics you find
-your class (mage/warrior/rogue)
All of this will be in your base for you to switch at will once unlocked.
However for that to happen, I'd need to make a naked featureless (as in hair, armor, etc) body for the MC for the hentai scenes, otherwise the work would be insane.
I think it will be a nice trade. I don't think anyone cares about the male in the hentai scene, he's just an avatar for the player to insert himself in.
In this Era however, it will be fixed due to the story. Yes, the appearance will change, but it will be "story locked".