Hmm...
There's just too... much. It's kind of hard to explain without sounding like a twat.
On one hand I feel like some characters/plot/storylines have been stretched too thin - have dragged on a little longer than I'd like.
Example: Ten Tails - the wait/stalling seems stretched, same for Madara. Sasuke plot twists, I'd rather he'd vanish for a bit instead of him displaying a steller case of bi-polar disorder every other panel.
On the other; I feel like some characters/plot/storylines have been completely ignored, left unattended and at the wayside.
Example: Hinata's confession, Sakura/Naruto/Hinata, Yamato, Anko, where are the other nations in this recent battle - are the konoha 11 the only decent fighters left?
And I don't think there's been too much focus on the Uchiha, it's somewhat nessessary considering their involvement in... well, just about every aspect of the plot.
Though I do wish we knew more about the Hyuga... even if it comes out of databooks or whatever.
And in this War Arc - I feel like the cheesy banter (talk-no-jutsu) is a bit too common, so much so that it lessens the weight of it when it's said. It's like when someone says "Sorry" or "I love you" too much, it cheapens the words...
That, and when it's not pep-talk it's fight scenes that just don't hold as much interest as they used to... perhaps due to the Edo Tensei technique making a large portion of it (manga & anime) seem like a rerun...
That and I suppose the entire Shinobi Alliance seems a bit... too fluffy.
That's not to say the War Arc hasn't some brilliant/epic parts to it - Itachi/Nagato vs. Naruto/Killer Bee, Itachi/Sasuke vs. Kabuto, Gaara's 'we are shinobi' speech, Obito's identity revealed, the Hokage banter etc.