Nagato had his legs damaged by Hanzo and the Dragons emaciated him, the 6 Paths didn't do anything. He literally shriveled up as soon as he used the soul eating dragons, if the Rinnegan was killing him he would have been dead. He looked the same when he met Naruto as he did after massacring all those ninja with the Mazo. Madara made, what was it, 25 Moku bunshins? I think it was like 5 for each Kage, and had them all do Susano'o. Are you suggesting that Madara's chakra pool was large enough to divide that many times and then spam Susano'o?
In his fit of rage over Yahiko's sacrifice, Nagato made use of the Gedo Mazo that was given to him by Obito and summoned those Dragon-like entities.
The chakra rods that protruded from the Mazo's body accounted for his emaciation, he just got crippled from an attack by Hanzo.
I recall that the Rinnegan's techniques are quite chakra taxing since the usage of Chibaku Tensei cause some extreme stress to Nagato and the same applied to his grand-scale Shinra Tensei.
It's common knowledge that if you completely run out of chakra, you basically fall over and just die.
Madara is irreverent. Why? Because the guy is an immortal zombie at the moment and not mention he had a large enough chakra pool to take on Hashirama with his Susano'o-clad Kyuubi when he was alive (Due to the power-up given by Izuna).
So far, I review everything and came to a conclusion that I will abide by the non-combatant and combat rules regarding Edo Tensei.
Anyone else have any quarrel with the new rules?