I think Trips is done with the onscreen role for a while as I expect Steph's line about "being at Stamford" is true... Trips now needs to shadow Vince far more closely in the boardroom than onscreen if he is to succeed him... and Steph is off on that "scholarship" thing she got for several months...if she isn't up the duff as rumored of course... her focus isn't going to be on WWE and now Trip's other baby (NXT/Performance Center) has grown there may be other projects they have him in mind to work on when not feuding with Sting....
The Cena thing is simply a mechanism that it can eventually be brought back down the line... Trips might be a face or it might be that Cena feels they need "one president" in charge rather than GM's all the time... remember it wasn't THAT long ago the whole roster were walking out on Trips, basically getting him fired... so there are always ways back.
To be honest I think they're taking the leadership thing in a different direction. There's a thread about Barrett on here and I put a scenario together with him and Austin...Austin is a likely candidate...it's the kind of thing they can announce on the podcast or have Vince "offer him the job" on it and him say "I'll let you know at RAW..." Instant buzz and ratings boost.
The other candidates to me are all pretty much guys who can play the Tunney/Monsoon role... not be face or heel particularly, just show up to make big calls that piss both sides off from time to time:-
Ric Flair - pretty obvious if his health is back... he has the respect levels that few will "fuck with him" and is someone that Trips in the storyline could "try" and manipulate etc... "Hey' it's Ric... I know how to handle him..."
Mick Foley - He's lobbied for it and then seemingly taken himself out the running. He'd be a popular choice though, not sure he's right for it.
Jerry Lawler or Michael Cole - If they're ever going to change up the announce team then this is the time. King has been around long enough that the president role would work for him, he's over enough to manage it and they have Regal or Albert who can move up to take his place on colour... If it's Cole, then he kind of has the experience from that period we all thought he was the Anon GM... and it allows Renee Young into the mix for RAW. Not so sure the fans would go for that though... there are better candidates... My top 3 are:-
William Regal - The best GM/Commisioner ever on 2 occasions... he is ideally placed except for not being in the HOF but I expect that's probably gonna change this year. His new persona is more "elder statesman" than his previous shenanigans, of course he can always revert if the role requires... but everyone respects Regal, no one is really going to want to get on his bad side and he has the acting chops to make almost any situation work in the role. He'd also come accross well as someone who is "guiding the future" due to his NXT/training credentials... He'd be my 2nd pick...
Bret Hart - Again someone SO respected if he agreed to the semi-regular schedule then he's pretty much perfect for the role. Only concern would be his mic skills are not what they were, but for the Tunney style once in a while...he'd be more than fine and I'd make him 3rd pick purely on the pops he'd get whenever a decision was needed. He'd come across as fair too, which is quite important in a post-Authority era, having "lost out" to decisions in the past, he'd want to be seen to be "straight down the line".
To me though, I think it should be:-
Edge - If they can get him to agree it's a perfect role for post retirement Edge... he's young enough to be someone younger fans remember, has the "show" in his heart and has enough history with guys on the roster to build tension. To me, if not Austin for the mainstream attention or Regal for the genuine skill with the role, this is a complete no brainer if they can make it work. The fans love Edge, the "boys" respect him and he has the HOF career, mic skills and energy and..ahem Edge... to make the role important without hogging the limelight. He'd come accross, like Regal as someone focused on the youth movement and the future... Sign him up!