Yeah, dude, every arc is an important step for everyone. Just because there's a load of swordsmen doesn't mean it's "Zoro's arc", cause if that's true then Oda needs to make at least 8 other arcs. In fact, no, that would mean Brook would get a bounty increase too.
When Dressrosa is f*cked, the Mugiwaras can be blamed for the destruction, while Fujitora can be reported as restoring peace against the tyrant Doflamingo, it's very much like the Alabasta arc in many ways, so I personally believe that only Law, Zoro and Luffy will get bounty increases while the rest of the crew get their own from events on Wano or Zou