The Usos are fine. They're capable of having great matches when given a chance. They're just stuck in the current creative malaise affecting the majority of the roster. They only suck because of the same reasons why everyone else sucks.
And then what? Book him like all their previous main event heels and him cut 15 minute opening promos on Raw while working most of the matches and nullifying the only redeemable quality he has which is his babyface comeback sequence?
It seems like an easy answer but Roman turning while still being a top heel would highlight all his flaws and take away his only strengths. The fact is he's not a main event talent. His perfect role was the hot tag comeback guy.
Who cares if it's an easy answer? It's the smart answer because that's the storyline being put out in front of you. React to what the audience is giving you and adjust from there. That's always been their problem. They ignore reality, ignore the audience and act everything out for Vince.
We already see that Ambrose is getting better, bigger and more sympathetic pops out there so, why not have him turn on Dean for any number of reasons and off you go on a good, hot feud. Then you can add Rollins to the mix whenever he returns.
I just think that Reigns is probably about a billion times better as a heel than whatever he's doing now. He's kinda like Batista in that way, people just like to to boo him.