Its been forever since I played M&B, so I might have to fire it up again and check it, but I dont like the sound of it so much.
In MO, LMB is attack, RMB is block, alt key+LMB is alternate attack. Basically nothing needs to be targetted, you swing in the direction youre facing, so friendly fire happens here too. I think MO had a great combat system in beta, but theyve killed it with overkill, and have destroyed what wasnt really broken to start with.
I personally think if you can offer up a system like that, perhaps offer multiple combat stances as apposed to only 1, you'd be on a winner. The only thing the MO system lacks, is the ability to dual wield and choose your own combinations, like Xsyon currently has LMB for left hand attack, RMB for right hand attack. I think thats a good feature, but it makes blocking more difficult.
I also dont think we particularly need both blocking and dodging, I think blocking would be fine on its own, but I might be alone in that opinion. Perhaps I think that because right now, blocking and dodging seem pointless. Attacks have no limit, so why block? Attacks need to be limited, probably by stamina usage, almost RV style I suppose. RV made stamina a real issue while fighting, if you didnt manage your stamina, you were screwed. In Xsyon currently, I can swing all day and not get tired.