steven87gill
Pre-Show Stalwart
Once Bryan gets the title, this whole underdog thing goes away for him, and he settles back into the mid card as a face.
Whether that's the case or not will be solely down to how Cena is booked over the next 12 months. Good guy Punk as champion fell into the same mid card funk that you describe, precisely because of the Cena problem & the fact that Punk lit-that-shit-on-fire in 2011 & caught them completely off guard.
He wasn't in their long term main event plans for 2012, see, so when they gave him the belt he was quickly sunk to the upper-midcard so that they could still tell the stories that they initially wanted to tell (exactly what those stories were, i'm not sure)