Even with the most exciting RAW ever, committing yourself to three hours every single week is too hard. Also, with WWE also creating content for Main Event (1 hour), SmackDown (2 hours), Superstars (think that's still around - 1 hour), and their numerous campaigns, they have made it almost impossible for themselves to book a fantastic RAW every week. They make far too much content weekly for any concentration or progress to be made on a three hour RAW.
They should just drop Superstars and Main Event, and just keep 2 hours Raw and 2 hours Smackdown.
If they do that, watch the ratings explode.