I'm planning out an omake to have Kusco in charge of the Sun Empire instead of Yzma. Only this Kuzco is still the Kuzco that is the prideful arrogant character at the start of his story even though he is human again (I'm expecting this omake to take me a couple days).
Kumandra from Disney's newest film could probably use some fleshing out. The Druun turn things to stone and are a lot like Chernabog. Without dragons, everything in the world that breathes could be turned to stone. Establishing what is happening in Kumandra would be good, as the Druun could be locked up and never released for years still.
Hades, is his cult a thing? Or is he going to stick to his Disney-fictation? Will Hades leave the Titans to harm the mortals, or send them to sleep, or something?