As it is right now, Naruto needs to:

a. learn to manipulate another element (fire?)
b. learn to fuse the 2 elements together
c. start mastering taijutsu to gain speed and to counter the sharingan + mangekyo sharingan
d. a few other sets of jutsu b/c as it is, naruto is very limited to a few...
henge no jutsu -- orioke no jutsu -- harem no jutsu
bunshin no jutsu -- kage bunshin no jutsu
kuchiyose no jutsu
rasengan -- purple 1 tail kyubi rasengan -- oodama rasengan -- futon: rasen shuriken
...and transforming into kyubi (which sorta does not count because he goes totally berserk with 3+ tails kyubi)