So much of the problem is just how little action there actually is. Even when I watch the Rams, I've got Red Zone going on another screen. Most of the initiatives I've seen are basically cool stuff that could easily be sent to home viewers, but are being walled off to in-stadium viewers.
Stuff like multiple replay angles on your tablet or phone, the replay cam on the jumbotron, or interactive apps that only work on the stadium network. Supposedly the 49ers stadium is going to be this techno wiz-bang structure that's going to make all the other owners demand an upgrade for their buildings
edit: the ultimate vision for this gif was to have comic book text WIZ! and BANG! appear during each part of the explosion, but you can settle for the mental image