I don't agree with a few of your choices.
Hiruzen tried to use other measures to deal with the Uchiha Clan-- it was Danzo's fault to be honest here. Orochimaru being Hiruzen's fault i agree, because he could of stopped him several times; but chose not too.
Tsunade is useless? Really? She saved Sasuke and Kakashi from Itachi's Tsukuyomi. She became the 5th Hokage in order to create order in the village. She saved the retrieval team that was rescuing Sasuke from the Sound 5. Sasuke is a missing-nin usually you die because it's an act of betrayal against your village, yet she still didn't command any Anbu troops to kill him. She took Sakura under her wing and has made her into a somebody. She permit Naruto to take on difficult missions, when the elders warned her not too. She saved the whole population of the village from death, injuries, etc in the Pain Arc. She gave Naruto permission to participate in the War. That was pretty useless of you to forget.
I agree with Hashirama being a true leader. I feel Minato is the best thought, because Hashirama was the founder of the village. He basically was the root of all problems.