Originally Posted by Naruto2008
I believe he was extremely skilled with Suiton Jutsu and Genjutsu. And besides that he was Shodaime's brother and one of the founders of the leaf(not a main one like Madara or Shodaime, but he had a part I think). Besides that I don't think theres too much more. He was probably a very skilled shinobi and he was probably pretty smart too. I don't think he had anything as unique as the other Hokages such as, Mokuton Jutsu (1st), or mastering every Jutsu in the leaf (3rd), or was an absolutely incredible genius with a jutsu like the Flying Thunder God or the Rasengan (4th), or was an extremly skilled medical ninja (5th). He was just a very skilled shinobi that excelled in Suiton Jutsu and Genjutsu.
I still believe that he must had something Special....since we had see all Hokage had their own unique ability :
Shodai - Mokuton + Bijuu Controlled
Nidaime - ??
Sandaime - Knowing and using all jutsu that exist from Konoha
Yondaime - Speed & Genius
Godaime - Irou Jutsu
so..im believe that all Hokage had their own unique ability which other Shinobi dont have which make them qualified to be Hokage..