I wonder if WWE would ever considering including a traditional PPV for TV as part of a deal. How many people would watch Survivor Series if it just aired on NBC one year? Or Halloween Havoc? Would it overlap completely with their current fans or have lapsed people tuning in?
Main Event eventaully completely fizzled out ratings-wise. But WWE fans also have a canon of importance when it comes to events, and Main Event was not considered high on it compared to a Big 4 (or a Halloween Havoc, which I still believe WWE is leaving money on the table by not reviving).
Maybe if The Rock is involved it would work.