Think of the appropriately-themed keyblades! Iron-blade! Captain Ameriblade! LIGHTSABER-BLADE!
When suggesting a list of possible new worlds to include in Kingdom Hearts III a few weeks back, we intentionally left Disney's acquired IPs, Star Wars and Marvel, off the list -- partially to keep things a little easier for us, but also because we all kind of think that having that many disparate franchises in one game would make our little nerd brains explode. Of course, that didn't stop them from coming up in the comments section at least a dozen times. Well, if game creator Tetsuya Nomura has his way, you guys might just get your wish granted, because he's officially on record as saying that he would love to include them in KH3. Guess the ball's in Disney's court now.