Originally posted by Demonic Phoenix
What about his sword skills? Kirin? Cursed Seal? Speed? I think he'd get frustrated at least once there.
At the point he was with Orochimaru? Probably not. He had the basics, and with sharingan he can see the movements of a master like Orochimaru then just practice them repeatedly with stuff like sword and speed until he has it down. Application of said skills can then be handled through sparing sessions.
Kirin's the only one of those who required creative leaps, really.
I can see him sometimes get annoyed if he thinks he isn't progressive fast enough, but I don't see him getting truly frustrated since between part 1 and 2, he didn't do anything radically different than he had before.
Though with his eye jutsu it was a bit different- they were new, and he clearly needed practice with the Susano'o to use it properly, and he also got better with amaterasu, learning to shape it. Which might in part be why he overused 'em- he felt he was getting better and he'd naturally want to continue to do so to get stronger like he's always done.
Meh, Sasuke's a genius anyway, and he's always picked up stuff easily. Kishimoto has said it himself I think. Or it was Kakashi.
Kishimoto did said watching him train would boring and very consistent in rate, unlike Naruto who's get stuck, then make great leaps, then progress slowly... variable rate in other words.
That however doesn't mean that he doesn't train. As you said it yourself, fine-tuning. That would be even more boring to read than a regular Sasuke training arc.
We never got to read Sasuke training with Kakashi right? Or Hinata training with Hiashi. Or Gaara training to perfect his Sand jutsu in Part 1 (after his battle with Naruto).
That sort of stuff is reserved for Naruto only.
Yea, pretty much.
And there wasn't much for him to do during the time-skip but train.