1. Izuna was dead when he lost his eyes, he died because tobirama mortally wounded him, madara took his eyes after that. if he was alive without eyes he probably could yes.
2. he didn't get a direct hit.. he had susanoo activated which gave him the chance to jump aside, with only his arm getting caught, first you see his susanoo in pieces, then you see his arm flying of, if he would've gotten a direct hit he would've been in a million pieces.
Who killed hashirama? i don't know.
3. hachibi and kyuubi didn't have a seal.
4. First hachibi and kyuubi needed to be out, which they were a lot of the time.. then you need to take them out.. which you might argue was done with hachibi, but basically only after he started the awaking of juubi proces.. and then you need to put them on a leash..
I assume it was obito's plan to do it that way, cause i don't think he was planning to do an extraction proces of a few days/weeks in the middle of a war. he wanted to pull him in with yonbi too..
5. it's misread.. he didn't absorb amaterasu, he pulled his armor off..
While madara was on fire Hashirama was thinking "he can absorb ninjutsu', as in 'it's no use he can absorb ninjutsu',
then madara pulled his burning armor off and you see hashirama with '!?' 'what does it mean?' as in 'what does it mean that he didn't absorb it'.
6. EDO madara might have unlimited chakra, as in he doesn't get tired, but he's not unlimited powerfull..