If we're taking Mike from Ft. Collins seriously, like the two Kansas P5 teams playing their neutral site game in Missouri ( ), we'd be looking at attendance potential of 78,000. Since like 60,000 of those seats would be sold to K-State fans, and the ticket sales are split evenly between the teams, we'd be giving KU a ton of money. Ain't gonna happen.
Playing in Mile High is a big deal to the 18-20 year old players who get to use the same locker rooms as the NFL teams and play on an NFL field (the same one John Elway, Peyton Manning, Tom Brady, etc) played on. Fans who have to drive further and/or get worse seats don't particularly like it.
I think CU gets 55% of the tickets (west side) and CSU gets 45% of the tickets (east side). Each school disperses them however they choose.
I'm not advocating KU and KSU move to KC. I'm just curious if they ever played there, and if not, then why? Even once every 3 years in a 6 year cycle (so twice total) would be an interesting experiment.