I think Seth Rollins has been aligned to be the top guy in a post John Cena world - if Triple H were ever 100% in charge. I say this, because Seth Rollins is the best overall talent on the roster.
I like this storyline, and I remember saying at the time, that the Shield angle would be ingrained in the WWE for a very long time. This wasn't simply a 2 year run as a team - this was the origin story for each of these guys. The turn, becoming the face of the Authority, being screwed by Triple H, his revenge..