This...uh, bears absolutely no resemblance to Mega Man. Like, not in the least. I'm playing Meat Boy with a gun, and the color blue is nowhere to be found.
First of all, controls. Mega Man was a digital man, for a digital age. He didn't have one bit of this floating nonsense. You hold right, you're going right. You stop holding right, he stops. Right there. On the frame. He's no leaf, floating around in the wind! He's ROCKMAN! DRN-001 ROCKMAN!! ロックマン！！
Now, I'll admit, I have yet to play Super Meat Boy. I played the original, and it did not groove to my jive. But at least, from what I did play, most of the levels were about using the physics to your advantage. They all had a neat little path that flowed with the physics of the game, so you didn't have to fight with the floaty controls to go where you wanted to. Your jumps just led you there. Here, it feels like half the time I'm trying to make a jump, and it's one that would be really freakin' easy were I playing as Mega Man or even X. But here I'm flopping all over the place, trying with all my might to push my character in a rough direction to where I want to go. This ain't exactly puttin' the "precision" in "precision platformer", you know.
Secondly, hitboxes. Mega Man was really good at this. They were pretty big, yes, but they were fair. When a bullet hit you, you knew. When you hit something, you knew. Now, level three. I died like a dozen times to that first stupid ultra-plunger, and most of those times I was absolutely sure my bullets hit him. But they did not. (also, Mega Man was all about being forgiving toward enemy damage, what with its 28-health life bar, something which isn't exactly reciprocated here)
Finally, and then I'll shut up, walljumping. Look, I know it's cool to be shooting the other way when you are on the wall. And yeah, X did that, and he looked cool. But look at the stage design of Mega Man X. It didn't have tight little corridors where you accidentally might stick to the wall. Yet level 2 has a big one near the end of the level, with an enemy to boot! So you slide down the wall, are facing the wrong way, and have a retracta-pole comin' right downtown for some rear-end action.
Anyway, please forgive my criticism. It's just, I was really expecting some Mega Man action, and ended up with a face full of meat (boy). And I probably shouldn't be too hard on it, considering it's only a few days in development. Still, I think you should at least be aware of these issues now, so you have more time to decide where to go from here! Good luck, and I'm interested in seeing how this develops!