i'm pretty sure impure res while it gives unlimited chakra/stamina still limits the affected in someway (tho madara doesn't seem affected). i'm guessing madara knew where ppl were cuz he musta been used to fighting blind for a while, cuz those aren't even his eyes that he's trying to steal back from obito, they're his brothers izuna right? cuz madara went blind using mangekyou sharingan.
and why is he trying to steal back the left eye so bad? the right eye is probably stored in that underground lair of sharingan eyes, why doesn't he just go there rather than... keeping obito alive? and kinda not fighting kakashi and the fourth?
ugh the more sense you try to make, you get confused...
like where the fuck is yamato? is he still being whored out in the tree making more zetsus?
is the third ever around?
did blind madara really just give up on his vaulted eye-sight and just go, fuck it, i have senju powers, time to control all the 7 beasts?