So maybe this is a better spot for this...
What do folks think of the idea of Star Wars Rebels crossing over with some other series? In the event that something like this happened I would imagine that it would occur in a comic or game or something; we're not talking about the guest appearances by characters from the Star Wars movies or The Clone Wars in the show. Question is, does anyone like the idea, and what would you like to see?
Personally, I like both Rebels and the Voltron: Legendary Defender series currently on Netflix, and the two have similar enough themes that I think it would be quite enjoyable. Given the whole "long time ago in a galaxy far far away thing" I would imagine that some time travel might be involved, but otherwise it seems entirely feasible. The idea of the Galactic and Galra Empires meeting up and perhaps initially forming an alliance but then ending up at each other's throats is pretty cool: I could see Sidious vs. Haggar, Vader vs. Zarkon, Inquisitors vs. Druids, Imperial Sentries vs. Galra Sentries, and Stormtroopers vs. Galra Soldiers. The teamup of the Ghost Crew and Voltron Paladins would be pretty sweet as well, though I wouldn't mind a brief clash between Sabine with the Darksaber and Keith with his Marmorra Blade. I also wouldn't mind the conflict between Empires being engineered between Maul and Lotor, or maybe even a brief appearance by Voltron's Commander Sendak.