It's a good joke, but I hope they eventually get past the misunderstanding and patch up their friendship. Stagnant character relationships get really frustrating after a while.
I don't think Disney is going to risk their most popular new franchise with a yuri lead. It'd be awesome, but there's way too much on line. Hell, Korra had to leave it at heavy insinuation and comics, and that's a Nickelodeon cartoon.