The man really doesn't know when to quit. Didn't he talk about leaving SW alone and doing small artsy weird movies??

Between the TV shows and movies, it seems SW is all he thinks about.

A couple of things do come to mind:

While the prequels sucked, they were profitable, however with god knows how many seasons of the Clone Wars and 50 hours of the live action TV show (plus the misterious comedy show that's also coming), SW is in danger of being overexposed. With the declining quality of each movie since Empire (and sadly there's no reason to believe this trend will stop), can a new trilogy really be profitable??

Also, we're talking something like 2018 (24 months after the ROTJ re-release). So the trilogy would be over by 2024. Some key people will no longer be with us probably. I mean Star Wars without John Williams, really??