I never said anything about staying in the same power level. It's possible for Naruto to get stronger, but still use creativity and ingenuity to win a battle, instead of a "I've more chakra than you, so I'll win!" I think you underestimate Naruto's good points as a tricky ninja, and only look to him as just strong. That's boring. Don't think that getting strong must mean you have to use brute force to win.
On the contrary, I'm not underestimating Naruto in any way. Like you, what draw me to this series was all the cool tricks and tactics the ninjas used to win fights, specifically Naruto. And I don't think that getting strong just means increasing you ability to dish out damage through brute force, but I do think that it's necessary to increase your actual power (dealing damage, illusions, whatever.)
I do think the power acquisition is ridiculous. Powering up is all fine and dandy. But through a lame and boring way as just tapping into something you've had forever? Come now. If Naruto and Sasuke gained strength, via work and training, I wouldn't look down on the current events. Instead, we're seeing recycled material, where the power pops up out of nowhere.[/quote]
These power ups didn't pop out of nowhere. Like you said, Naruto's always had that power. Isn't it time time he started using more of it's power? I mean, what he was using before was a pittance. Gaara had more access to his demon's power than Naruto did. Also, this might serve as a starting point in the near future for Naruto to learn techniques that he simply cannot do without the demon chakra, like bloodline abilities (not like the summon technique, where if he had enough chakra of his own, he could do it). All the coolness potential this fight is setting up is well worth the dbz type power gains, specially since this happens so rarely (if ever?) And Sasuke...I don't quite see your problem with his evolution. He's developing his Sharingan. How do you train that? In battle of course. It's only natural that the third dot would appear in a fight of this caliber. Also, he's not using the power of the cursed seal right now. The way I see it, Sasuke's evolving quite wonderfully.