Interesting...The Big East loses W. Virginia, a perennial bowl team and the SEC takes Missouri. The Big East would get a fairly good television network if they invited Missouri. West Virginia does not have much of a population base.
So, why would the Big East invite Iowa State to replace either of these teams? Iowa State has few fans around the country except in a handful of areas in central Iowa. Iowa State has NO television market whatsoever. Iowa State is the perennial bottom feeder of the Big 12. KSU shared the basement with ISU until KSU developed a decent football program. ISU simply took KSU's place.
So the Big East would take Kansas, KSU, and Iowa State. What in heaven's name would any of those teams offer a conference on the east coast? Kansas/KSU maybe for bb and ISU doesn't even fit there.
The SEC is moving to different parts of the country for new markets, which is what all the conferences want. What is hell would they want with the three leftovers from the Pac 12? If nothing else, travel costs would skyrocket. The leftovers offer NOTHING in the way of football excitement.
Hell, most people along the east coast don't even know anything exists west of the Mississippi River. Can you imagine the excitement along the east coast if football fans know that Iowa State, Kansas, and KSU are new members of the Big East. Fans would be giddy with excitement waiting for the Rutgers/ISU, UConn/ISU, Syracuse/ISU games.