I wish there were other types of monster girls to add, though...Like robots girls, goblins, elemental girls like flame spirits, and so much more, and ghost girls. I know that's crazy but just picture it for a moment. You could cybernize your monster girl to be more like a drone. Or even just have an outfit that turns one into a rubber drone.
And there should be more subclasses like a boxer that really know how to throw a punch. Or hell, a clown class that uhhh...for those who like clowns. The robot subclass as well. Alchemist class that uses bottles of acid or poison. The point is, this game could have so much more. It shouldn't just end. You could have a ninja, a robot girl, a rubber drone, a bear girl, subclass for light and darkness. A tinkerer class. Hell, take a page out of Odyssey of Ginanna and have transformation classes.
I am just giving you ideas on how to make the game fun. Make it so we would have more outfits, more choices, more classes.
I think there should be a special form for feral succubuses where they grow larger horns and can impale foes with them or use fire. A fearl form of a human could be a monkey girl. Again, just spitballing.