I honestly don't understand why so many fans want to mess around with characters and gimmicks that shouldn't be messed with. If it ain't broke, don't fix it and Daniel Bryan's not broken.
They tried turning Daniel Bryan heel earlier this year and it didn't take. For some damn reason, even all those months of Bryan's growing popularity, Vince underestimated how over he was. They made him a member of the Wyatt Family despite the fact that people WANT to like and cheer for Daniel Bryan. Whether it be hardcore smarks, your average fan, men, women or kids; fans WANT to like Daniel Bryan. Fortunately, WWE was able to realize this without damage being done or momentum being lost. The explanation that Bryan was essentially going under cover in order to get his hands on Bray Wyatt wasn't the best in the world, but it wasn't remotely as bad as it could have been.
Putting Bryan in a suit & tie and having him join The Authority, the group that's spent almost a year screwing Bryan out of the WWE Championship in one way or another? I know it's just an idea that the OP is tossing out there and I'm not going to jump down anyone's throat, but it just doesn't make any sense from any perspective.
I wouldn't mind if Bryan came back with a bit of a harder edge towards his opponents, willing to take the fight to them as hard or harder than they'd take to him as sort of an adjustment he's felt he has to make, something he's had to learn to embrace if he's not only gonna survive but get back to where he was. After all, it'd be something of a natural progression when you consider the nature of his neck issue and that they've put it into the story with Kane ultimately being the cause of it. That is, IF they're able to ultimately keep him with the likeable "every man" persona that ultimately got him over in the first place. I don't mean to make him some cross between Rambo and the Terminator with just a dash of Stone Cold Steve Austin, just a bit less of the "aw shucks" kinda guy while still being laid back until its time to NOT be laid back.