One side note:
Is Cena still playing the "controversial superstar" angle in which he gets booed and cheered by the same crowd? I know he was still getting mixed reactions as recently as his big Mania program with Rock.
I made an observation the other night while searching through old Sabu footage and came across his match with Cena at ONS. Okay, that was what, 2005-ish? During commentary, J.R. referenced Cena as "the controversial superstar" as he received his usual mixed reaction. This night, the phenomenon was particularly strong, as it was a predominantly ECW audience at the show; this was the event where fans threatened: "If Cena wins, we riot."
With regards to Cena's love/hate fanbase, how long will they play this out before taking it in a new direction? IMO, the last few years have given wonderful momentum for a Cena-turn, and I've often pictured him forming his own rebel fan-base, which would be different than the Attitude Era, in which certain heels became cool and were cheered.
This would be different and unique: it would be more like a demographic-specific thing where Cena may have the little kids, "young adult" women, and pre-teen girls cheering him, while everyone else (like adult and pre-teen males)
I still hope they'll try something like this. In my mind, they'll need to turn to something different eventually. As I mentioned above, he's been working the same love/hate angle for quite a while now.