I would totally pay to support my favorite shows... especially if it meant I got early access to episodes, behind the scenes access to extras, and a chance to visit the set or meet the stars!
I think that a sea change will happen in the next decade, where TV shows will be supported increasingly by subscribers. If that happened, that would change the game... shows that were loved by fans wouldn't just be canceled because they didn't have enough ratings. It would also give shows more time to find their footing, which I think is really important for quality TV.
Would you ever pay to support your favorite TV show? If so, which shows that you watch these days would you pay to support?