msu35 posed the question in another thread with a baseline of moving from a 40k stadium. Curiosity got the best of me so I wanted to see how that looked. I originally planned to only go back to 2000 to save time, but then changed to 30 years ago before settling on 1990. Because of this I do not know if there were any schools that made the same move before 1990. I also looked at all sizes instead of just above 40k. I used
this Wikipedia page as a quick reference for build dates. The following list only includes schools who built their new stadium on the main campus.
The main thing that stood out to me was that three of the five schools that moved from stadiums over 40k were in the same conference as Memphis at different points. I realized after the fact that I didn't keep a proper track of ownership of the older stadium as I was doing this. But from what I remember Colorado State is the only school in this list that owned the previous off-campus stadium. Most of the schools moved into smaller stadiums. Louisville has since expanded seating past the previous stadium's capacity.
Other Notes
*N. Texas, SMU, Houston, Utah, and Stanford tore down their old OCSs and built new ones. N. Texas built the new one in a different location than the old OCS.
*Georgia State built a new 24,333 capacity stadium after playing in the Georgia Dome. Still off the main campus, but they own the stadium.
*Hawaii is currently playing on campus till the new Aloha Stadium is built.
*Rutgers has a stadium on a satellite campus. The old stadium was torn down and replaced with a new one.
*SDSU bought San Diego Stadium and its property from the city. The stadium was demolished, the land became or became a part of their satellite campus, then a new stadium was built.
*Buffalo built a higher capacity OCS in 1993. The older OCS is in use for other purposes.
*Northwestern owns their stadium located away from the main campus.
They have plans to tear down their old 47k stadium and replace it with a 35k stadium.
Also from discussions about the subject since my time joining the message board, I would see other schools getting mentioned that play off campus. I looked a little deeper into their situations, and it seems like the debates are similar to ours.
For example with UCLA
this blog post (I found out Northwestern's plan here) from Oct. talked about an OCS. This post has a tweet from Troy Aikman and I've seen other fans saying something similar about wanting an OCS that is at least 30k. However
this article talks about the issues UCLA had/have with getting an OCS. One of those is that they have a contract with the Rose Bowl till 2044 with no opt out clause. They also
give away free tickets to help fill empty seats. The article says that hasn't been successful.
In all this was pretty interesting to look at.