You do realize that the result of Hinata's actions was necessary for Naruto's character development, correct?
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Minato wouldn't have entered the picture were it not for Hinata. Naruto would never have been able to accept his new goal of bringing peace to the world, and Nagato would never have restored the lives of the villagers.
Minato's actions were a static failsafe; a failsafe that would only work once, and would have broken down once again in time. His role is largely irrelevant.
Everything Naruto does from the moment he unleashes the Kyuubi to the moment he is slapped is a cascading causal chain triggered by Hinata; just as everything he did prior to her sacrifice was triggered by her acceptance and display of his nindo.
The dude has been under the influence of the 'gentle arts' the entire time. He starts to get out of line... Hinata shows up and gives him a nudge that sets off a series of events that puts him back on course. No one suspects her. She's a Taoist master, and should be watched closely. You all thought Infinite Tsukuyomi was OP...