There was no merit to the execution of the plan. What the heck were they just standing there like idiots when the dude refused to die? They should have started to chop him into cubic decimeter pieces as soon as they noticed that. But instead they took their jolly time talking shit and wondering how he could still talk shit back.
I also honestly thought, I have to admit to my eternal shame, that Naruto could already make a rasengan without a clone but was just doing that to trick his enemies so that he could take them completely by surprise by suddenly making one without a clone. But I guess the worst mistake you can make when watching Naruto indeed is to imagine the main character could have half a functional brain.