They should hire better animators and writers for their 2D shows. Spectacular Spiderman, Ironman Armored Adventures, and Wolverine & the X-Men were much better than the current shows now.
As for the movies, I wish they'd make serious rated R superhero films or adult animation. No more sequel bait with Pixar when the idea team makes a rehash of the old movie. (Finding Dory/Incredibles 2)
Also upgrade Disney and make a dedicated /v/ department. All modern Disney games suck. Instead of spending billions on Star Wars toys. Dedicate on making games based off animated movies. I can't believe they ruined Battlefront and Marvel vs Capcom. They even revived Club Penguin and killed it with a reboot.
And one more thing that ruins Disney is over depending on the Lego series to make games. It's cheap as hell and looks terrible.