I reckon you should consider adding some sort of story system to the game, traversing caves and dungeons, entering dimensions, and defeating the final boss of the game. I also think you should take advantage of Mrs. Slither's sword because that shit destroys everything in a single hit and rewards you with 15,000 juice each (from my experience), essentially you just upgrade your flight, take a few hits, and then take her sword and automatically upgrade to max on everything. Like minecraft, I think this game should have some sort of purpose for completion...