Ebisu's job is to train Hokage candidates. The fact that Ebisu has been training Konohamaru since he was a kid and that he is now the permanent team leader of Konohamaru, Udon, and Moegi means that out of the entire village these three kids have the highest potential. Ebisu trains only the elite and is better than Kakashi. Ebisu is the shortcut to Hokage. He knows how to train people into kage level. Konohamaru, Udon, and Moegi are being groomed to be kage level. The similarities to the Sandaime team are not a coincidence.