i think focusing on the core group would be good: kermit, piggy, fozzie and gonzo. the other guys should have parts of course, but maybe delve into those friendships and relationships between the big four, so to speak. one of the things i did like about GMC was how much of a trio kermit, fozzie and gonzo were for a good chunk of it. i'd love to see something that explores the core characters and goes a bit deeper into who they are. you can only go so deep of course, but i do think you can go a bit deeper with the bigger characters (i don't think there's a whole lot more to animal or beaker, for example)