If the HK are going to be Imu's archiles heel this arc, then I guess someone needs to hold him back till he gets that critical hit so not really mad at this combo of Luffy and Loki playing that role. Neither of them really stand a chance at beating Imu but the combination of Loki's Strength, AP, AoE in addition to Luffy buzzing around being a nuisance and taking advantage of openings seems like it'd be enough to stall Imu until he ultimately fcks them up again. Pending that I reckon we will switch to the wings fights for the next few chapters. Not really a fan of the way Oda's gone about this fight but I'm not mad at the way he's having Luffy combat Imu atm with just sheer stuborness and creativity as those are is two strongest points. Needless to say this is only possible due to him fighting alongside Loki. Will be interesting to see what this throw shit at the wall and try a bunch of shit and see what sticks tactic builds into with regards to growth for Luffy going forward, considering Nika's basically themed around imagination/creativity. Maybe he stumbles on Joyboy's fighting style or something trying a bunch of shit. Though I might be overthinking tings and this all leads to fck all as like is usually the case with Oda.
Also, would've preferred Usopp's line to have been focused on that resilance though as opposed to the freedom fuckery he was on about but it's whatever at this point.
Anyways, still expect we will see more from Imu's new form when Oda has him take things up a notch and return to business as usual again.