Supes and Bats already had their own shows. Sure, a guest appearence by any JLU would be OK to help cement the shows together, but this should focus on GL. As for the other cartoons... The BatMan took a long time for me to warm up to. Only seen up to season 3, which was really good. Still slightly kiddie with the Nachos and pizza references, but good. Brave&Bold, I really haven't found enjoyable. Some OK jokes here and there, but I just don't like the SilverAge look or the dumbed down characters. Poor Will Friedie (sp?) went from being Future Batman to annoying blue beatle bug boy.