And if it ended up in Tomorrowland at the MK that just adds to the thematic mess.
On too of that, the Incredibles had their run. The movie came out years ago and there doesn't seem to be any plans for a sequel. I loved the movie, but it's relevance just doesn't seem the same as Cars or Monsters Inc right now.
True, Tomorrowland needs a big overhaul at some point. (I would like to see CoP move to Epcot, MILF and possibly SGE both moving to DHS, and Tomorrowland Speedway getting refurbished with electric/other futuristic fuel and something to look at while going round the course - but I doubt that all of that would happen any time soon.)
As for The Incredibles, I thought that it was all right, but it just seemed like it was building towards something, and then it just finished. The whole film just seemed like an opening act that was setting up for a bigger story, with the Underminer showing up. It's probably the Pixar film that most needs/is suited towards a sequel - it just didn't seem complete to me.