^ I like that kind of wish list! So I'm going to guess/wish for...
Marvel: Scarlet Witch, Vision, Agent Carter, and Wasp (strike Wasp from the list if the 4 remaining Marvel included Ant-Man)
Star Wars: Finn, Rey, Kylo, Poe, _______ (Force Awakens); Hera (Rebels); Padmé and Mace Windu (Prequels); and Lando (Classic).
Disney: Nick Wilde, Judy Hopps (Zootopia); Belle, Beast, Gaston (Beauty and the Beast); Mushu (Mulan); Goofy, Oswald (Fab 5); Peter Pan, Captain Hook; Alice, Mad Hatter, White Rabbit, Queen of Hearts (Classic Alice in Wonderland); Sergeant Calhoun, Fix-It Felix (Wreck-It Ralph). Play sets could go to Alice, Peter Pan, Zootopia, and/or Beauty and the Beast.
I wanted to include Pocahontas, Kermit and Miss Piggy, Kida, Quasimodo and Esmeralda, and Dr. Facilier on my Disney list, but had to cap it at 16.
I think Dr. Facilier could come with Tiana (maybe even Naveen and/or Charlotte) for a P&tF play set, and the Muppets could have so many other characters included, making them more likely for a later inclusion (in my opinion).
I tried to base my list not only off of what I would want, but what's requested and what's popular, with a mix of old and new franchises.