I think they might support two storylines each for the women and tag team then the rest of the time is varied singles feuds.

Rhyno and Slater can feud with either Vaudeville or Breezango with no problem. They don't need "real" rivals because the hold the belts.

Then the Usos and Alpha can continue their blood feud and put on amazing matches without needing a storyline revolving around the titles. Alpha also doesn't look weak because they didn't lose to Slater (and his great storyline).