I'd like to reiterate @garik16's point from a perspective of somebody who was actually there.
Run some recording hardware on the four "feature" stations (1-4) that are not main stage matches. Have downtime where you aren't playing ads? Pick some of the better feature matches and play those back; that'd be great not only for stream viewers, but also everyone at the event so we can see something going on the main screen in between our sets when there isn't really time for any casuals.
Is that something you guys would be interested in doing? Because the spectators would absolutely love it, and it'd be neat from a competitor's standpoint as well during downtime.
EDIT: Oh, and if you can replay any and all Friday/Saturday stage matches immediately after their conclusion that would be GODLIKE. I missed so many good ones (esp. dizzy v wafflez) because I was busy playing my own tourney match. I'm very upset I didn't get to see it