I agree wtih the roadtrip idea, they did a roadtrip on earth in the OS, they did a roadtrip in UAF and Omniverse throughout the Galaxy on several episodes, now a Roadtrip throughout the universe would be great. New species, Unknown Galaxies and other galaxies, New weapons and there might be an unknown Galaxy where a similar yet not entirely the same device as the Omnitrix might exist. Like you know, an alphatrix, or betatrix, or omegatrix. something like that which could make weapons, or summon beasts or something.