I'd be interested to know, in the case that said conversation were to happen, which characters Disney would be vying for. I'd be even more interested to know how sweet (or not) the deal turns out to be for both sides.
It's a shame, really, that Disney doesn't have any in-house properties that could fix the problems they're looking to solve with Marvel right now. I mean, Big Hero 6 definitely doesn't combine healthcare and robotics in an interesting way, nor would it serve as a more than suitable IP tie-in for a Future World pavilion centered around those two things.
And of course, the Incredibles isn't an animated superhero film that would lend itself well to a high capacity D-ticket in the Launch Bay plot. And it definitely doesn't have a sequel on the way, so there's no opportunities for synergy. And, you know, superheroes and robots don't move merchandise.
Oh, wait.