The Usos' doing a program with their Dad might be a fun, short-term thing if WWE ever decides to give them a push. Yet, my feeling is that Jimmy & Jey had their chance to shine at the beginning of their tenure and that if Vince McMahon saw star-power in them, they would have attained the heights back then. They had that twin-dance thing they did coming down the aisle that differentiated them from other tag teams......they won a few matches....and then settled into lower-card Hell.
As I see it, their future holds the same "major league fatness" their father possesses. It's in the genes, y'know? That kind of thing will probably hurt them as time goes on, since WWE today accents performers who boast impressive physiques. The Usos' are the beneficiary of the revived tag team efforts with which the company is currently involved. IMO, that's the only reason they're still around.
But since they are still here, a brief program with Mr. Stinkface could be fun. WWE likes to bring back legends for short bursts, and here's a natural pairing of an old-timer and a couple of young bucks. Even though Rikishi brought some oomph when paired with Grandmaster Sexay and Scotty Too Hotty, the team looked visually out of place, for obvious reasons. But a man appearing with his real-life sons could be interesting.....again, in the short term.