Very dumb, because it will make other SH even more useless. What's the point in having all these Straw Hats ? That's why Wano sucked for most of the arc, and my main problem with this arc. Just make Zoro come back if you want a tag team against Saturn. You have Sanji and Franky pinned for some reason, why not make them fight the Vice Admirals, Jinbe being a furniture mover.
Too much reliance on outside characters instead the SH right after they became a Yonko crew.