Well I've reached the end game but put the game down for now after realizing just how obnoxiously drawn out the final boss is going to be. I have seen the ending, though, so I know what goes down.
Honestly? The presentation and graphics don't bother me that much, though at the very least they could've drawn animated mouths for when people speak - and they wouldn't even have to be lip-synched. My opinion from before still stands that the level designers decided to be a bunch of lazy asses when it came to punishing the player, because instant death is just way too frequent. I never died by normal enemy damage once, although I've come close. The weapons suffer from the old Mega Man effect of 'a couple are really good (Brandish, Battalion), the rest are situational'. The Dash mechanic was still poorly thought out.
More particularly, the bosses are also really annoying. It's one thing to learn their patterns, took me a bit with Pyrogen, but it's another when most of them come down to either finding the right circumstances to avoid almost all damage, or trading hits back and forth until you die or they go down. I brute-forced several of the bosses by just finding a good weapon and spamming it (aka the two I mentioned above, though ice on Batt was.. unintuitive). If I hadn't, no pattern mastery would've saved me from a lot of pain, especially when they start throwing out the instant kills. Even Pyrogen and I came down to the wire since I didn't have his weakness yet, so I had to buster-only him.
What puzzles me is the multiplayer inclusion, they scapegoated it last year as being part of the reason for delays (though really it was probably just Deep Silver's awful publishing and Red Ash) yet it doesn't seem to have any worth at all. No one's obviously going to be playing Mighty No. 9 for its multiplayer. And the co-op is apparently designed in a way that Call has to be on-screen to be controlled or else she'll go into an off-camera autofollow mode, and can die and be revived freely, but.. it's not local, it's online-only, which means having two people on two consoles and TVs/monitors means jackshit. And no one will be playing Race Battle either. So that's an entire pair of modes down the drain.
This game wasn't terrible. But it was frustrating, and less fun than any mainline Mega Man game I've ever played besides Mega Man & Bass, and that's a hell of a statement.