This is really it right here.
You have 6 football games a year which will bring hellish business for 12-18 games. You have what, 20 mens basketball games and probably another handful of womens BB and/or wrestling events that will bring in some crowds for a night. Even with the football slaughters, that's not enough viable events to make this kind of thing work out.
I think the bold is what has to happen to really make this a viable/remotely sensible plan. The problem is Ames has never really been viewed as an extension of the Des Moines market like Lawrence has with KC. Mammoth, Pipeline, and other promoters were based out of Lawrence over the years and they consistently put shows there as part of the "KC market". People became used to and accustomed to making that drive to see shows at the Granada, Bottleneck, and Liberty Hall. Even if Jamie WANTS to lure events to Ames he HAS to have a promoter that sees his vision. He will need a First Fleet (DM based) or a Mammoth (whos is behind a lot of TM venue shows in the OMaha, Des Moines, and KC regional markets) to put shows there. It then has to be the right sized show for that to happen and Stephens is simply the wrong size for that to happen. A lot of 3k sized events skip the low-mid markets altogether. Anything smaller and you have to convince someone not to put it at Hoyt Sherman when 90% or more of events will sell better there, all things being equal.
Just because you renovate Stephens and aim for grandeur doesn't mean it will happen. You need a promoter that has connections and can bring in the shows, then they need to be successful. Tough sell IMO.