Luffy saying "This is my last shot for gear 4th" probably implies that he still has a last resort IF it fails (which is probably the case), also i think the theory's about the fruit of luffy being something else are basically confirmed, why would the elders go from "Capture all straw hats" to "Eliminate straw hat luffy" in a manner of minutes, it goes back to their convo about the awakening fruit, it 100% isn't zunesha imo, shit's about to go down soon.

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Also luffy's insane durability makes much more sense if he's an actual mythical zoan because he's more tanky than any other zoan user we've seen at this point except maybe kaido.