First of all he hasn't even gone all out yet.
Second he spend 2 years with Reyleigh to train, I think it's dissapointing to not see his full power, and not beating his first serious new world opponent on his own. His enemies are just going to get stronger, and I feel like doflamingo is one of that weaker characters in NW. If kda wants to show us luffy's improvementz he should let him handle doffy alone, as Law is worned out
Second he spend 2 years with Reyleigh to train, I think it's dissapointing to not see his full power, and not beating his first serious new world opponent on his own. His enemies are just going to get stronger, and I feel like doflamingo is one of that weaker characters in NW. If kda wants to show us luffy's improvementz he should let him handle doffy alone, as Law is worned out