If we're going on megaman rants, i can contribute too!
I always liked 1-6, 9, and x1-3. for some reason, when they gave the floor a 3d feel, it made it feel different, and not in a good way. 7-forte, and x4+ had the odd feeling, though x4 felt better due to zero being awesome and not getting an overpowered double-buster-saberwave combo, and was actually made into full other character unlike in x3 where he was only a stagerunner, and even then X got better eventually.
I wish i could see x4 and up in the x1-3 snes style, it worked really well, in my opinion.
oh, and while i'm just being an opinion-giver, capcom, toss Axl plz.
Otherwise, i'm keeping an eye on this project, looks good, real good.