I like the idea of creating a team of CGI artists to superimpose a crowd into the arena every night. But random fake fans? No, we can do better. We are talking about an arena built from the nutritious dough of the greatest pizza empire on Earth.
Imagine, the camera pans past the players' bench and what is it you see? Shrek, Wreck It Ralph, Nemo, Gollum, and those blue assholes from Avatar.
So instead of work talk being, "Hey Bill, did you see the Wings game last night? Geez, what a stinker. But hey, they are rebuilding, I guess."
With Bench-o-vision 2.0, "Bill, I was watching the Wings and I saw Buzz Lightyear slamming beers with Kung Fu Panda. Incredible! Oh right, and Larkin did a thing, I don't know, I couldn't really notice with how full the crowd was with Minions and droids from the hit prequel Star Wars: The Phantom Menace."