DirecTV does the multiple channel coverage of the majors. It has one channel that allows the viewer to see 6 matches at once. You can then choose to go to a separate channel to watch a match of interest.
Probably not feasible to have 6 camera crews and 6 sets of commentators, but maybe they could have just the main channel with fixed web cam type coverage and 1 commentator group that highlight important happenings. Maybe that would be a logistics solution and they could start after doubles to save an hour and a half of air time.