I dont think its going to happen.
Theres no big dream matches that are going to happen now and calling it anything more than a great card would be needless.
Think about it, they have a hard time getting 2 guys to fight each other just once let alone a batch of megastars to all compete on one card.
There would be ego's flying around everywhere, 'I wanna be main event' 'No I wanna be'
Also, if they had lets say, 2 title fights, The LHW and WW, then contests at MW, LW and a few HW. All those participating wouldnt be heard from in months and the rest (PPV'S) that follow would be weak sauce. They could however skip a month of PPV's like January last year.