Theoretically, it could work... but realistically it wouldn't work. If Bret Hart returning couldn't stop the inevitable split of Hart Dynasty, then Rikishi damn sure can't stop them from becoming jobbers. And to be honest, I'm normally the guy that would consider that somewhat of a good thing, but I just don't see the legitimacy in the Usos anymore.
They have the talent, no doubting it. But how many times do we have to see new tag champions come in and dominate them before they can even do something relevant? The last thing I remember them for was their debut on Hart Dynasty where every match afterwards they were jobbed out.
Bret Hart had next to no involvement with the Hart Dynasty what only 2 segments b4 he went on his way fighting Vince then left again.
Hart Dynasty had no presence, they were a shell of there forefathers other then a few flashy moves.