I'm wondering why Kansas City fell out of the discussion. They built a brand new arena and have nothing to put in it. That could be a great rivalry if they were to get a team.
The Sprint Center is nice for what it is, but I wouldn't consider it pro league caliber. KC really doesn't want a team, they'd rather just have year-round events and concerts, not be tied to 1-team. They want to keep it open for Power & Light, because if they had a pro team there, they'd be required to keep the playoff schedule open, and by the time a team gets eliminated, it's too late to schedule events, or at least marquee events.
KC doesn't really want a team, but it's a good city for other cities to use as leverage in getting a new stadium built.