No more, please Kishi. Write something new.
I would probably read a Part 3, but it would be like watching an accident scene: you don't want to look, but part of you has to see it.
I think it would just show how bad of a manga writer, he rushed Naruto part 2 and now want a part 3? Kishi needed to work on character growth/development, world expansion, power scaling, and better plot.