Normally when someone learns anything, including combat, they learn the basics first. The basics aren't things that go away, they're an ever present foundation, and the better you are at them, the better you are, period. Good hand to hand combat is usually the foundation for someone like Naruto. He didn't get that, like, ever. Instead he got those things that are supposed to build on the basics. A rasengan and a wind rasengan, both of which need good hand to hand combat skills to work reliably, instead of some incredibly contrived tactic. He got kage bunshin, which alone is deadly as hell if your hand to hand combat is up to par. Asides from the demon and things linked to the active summoning of it's power, that's about all Naruto got.

Naruto didn't lack the power to take out akatsuki guys, nor did he lack the tactical ability. He lacked skill, because he lacked the foundation I was talking about. This frog-fu is now the missing backdrop against which all of Naruto's skills have to be measured. Think of it as someone who gets a hell of a lot of knowledge about stuff, but is missing one critical component to make any of it useful. Once he gets it though, he previous knowledge is still there. With a few adjustments, he's the brainy powerhouse all the knowledge he acquired implies he is. Naruto's cunning is what it's always been, his power is what it's always been, but now he can actually run up to someone, through a punch, and counter the counter (maybe). We'll no longer need to sit through 2 episodes of Naruto charging in and getting repelled 2 miles back, repeatedly. Also, the sage mode adds to all this, basically what the demon chakra did for him, minus the killing him slowly thing. Do I see him taking out Pein? After Kakashi figures out what the Rinnegan does, and the code breakers figure out what "the real one isn't there" means, and all this is told to Naruto...then yeah...maybe.