I think everyone would want different character development's. However.. I would show kakashi fighting the 7 swords men instead for fillers... I would take more time in the war and actually go in to a little more detail on strong characters that came back and got trolled like Hanzo, he took on the 3 legendary sannin and got owned by a guy with a sword.
I would like to of seen a little more strategy in the fights like when the brought down the Golver/silver brothers. Instate we get quick fight's that we don't even get to see.
Apart from that he's doing an alright job i guess.