Meh, the five eldritchs had Sabo surrounded in their own living room and he just walked away, so I wouldn't worry much for Nika and friends right now.
Gear 5 is always a lot of visual fun, never going to deny that. The cymbal to pizza to frisbee combo was wild.
But can't really say the same about the fact that this laughing maniac just toying with the highest powers in the world is basically a completely separate character from Luffy, and nothing he does feels even remotely earned or cathartic. Nika mode has basically become default mode, has no real drawback (and whatever little is there can be easily dismissed with convenient high quantities of food being available+ super fast magic metabolism) and can be accessed anytime effortlessly.
In the end, just like in the cartoons that inspired it, at this point I'm mostly rooting for the antagonist to take down this smug asshole that effortlessly powers through everything and everyone rather than for the supposed "Hero" of the story.
There was a reason for the protagonist being Wile Coyote and not the road runner after all...