The Thing is DIC as a company didn't really have their own original animated series that they fully owned the rights to for the most part. Like 90% of their series are based on existing properties where obviously other companies and studios would own a majority of characters and locations of those series they would have to pay out major money to use anything of due to licensing rights. It's not just stuff like Ghostbusters and Sonic and Mario that have that but like... EVERYTHING. Inspector Gadget, Rainbow Brite, Care Bears, Dennis the Menace, Teddy Ruxpin, Dinosaucers, The New Archies, The Karate Kid, Camp Candy etc etc ETC. Like DC and Marvel and hell even Hasbro have cinematic universes because they have their most well known material all owned by a specific source (or at least a majority of it as seen with some of the earlier Marvel stuff) so it makes sense to have all of those under one giant umbrella. Not to mention a lot of these shows are from properties no longer relevant or from franchises who have outgrown the DICification from these shows, or are from celeberties who wouldn't want ties anymore to these probably especially to them embarassing cartoons. Seriously DIC made cartoons of MC Hammer, New Kids on the Block and Mary kate and Ashley Olsen; no way would any of them sign on to have those associated cartoons onto some new mega franchise crossover deal so yeah it's a very niche idea that won't ever happen.