I love the game and its style so far particularly the animations and player character customization, but the Dragon Slayer definitely needs  a speed buff, especially for its price. It its current state, it is worse than basic default fists. Alternative animations for that could be selected upon victory after already winning a certain number of times would be a great use of the skill you have at animating. I would REALLY love to see a dungeon mode for if you beat a waifu enough time and/or you pay for it at the shop where you could then do all sorts of BDSM stuff(Whippings, Spankings, Hot Wax, Cattle Prodding, Forced Milking, Tickling, ect.). An potentially fun thing that could also be added, would be an item that unlocks a femdom mode upon defeat.

EDIT
I recently signed up on the patreon and the new version definitely earned an extra star. TOO FEW NSFW games include wedgies, the RPD uniform is super fun, and the power animation was GREAT! More wedgies, intense spankings, and general bullying followed by rape for the victory scenes would probably get me to become a top tier patron!