I don't think it's gona happen. Right now game is relatively easy, but tons of players are getting stuck on bosses and they complain a lot. If anything, more "profitable" would be to implement something like "story mode" for those who just want to see/read lewd stuff and don't care about combat/mechanics
I could receive hate for what I'm about to say, but I think that a developer needs to stop extending the olive branch, at some point: this web page clearly states what kind of game MGD is, those who download it should prepare themselves to put in a modicum of effort, at the least.
It's still an RPG, one is supposed to "grind it out" and eventually become strong enough to defeat the opponent he/she struggles with.
What I'm trying to say is: the developer is putting in a lot of work into making his/her game an enjoyable RPG (with a sexual twist/theme/veil on its mechanics), those who don't even want to put in a bit of effort into earning the lewd stuff they're after are better off playing something else.
Respect the product you're downloading.