I can almost guarantee that they'll use the right mouse button for "click to aim where your character is moving" like WoW has. If they are World of Warcraft players, they'll be too used to the system there to change it.

• Mouse (no clicks): Cursor for clicking items, equipping gear, etc.
• Mouse (right click): Holding right click will aim your character, and therefore your guns/attacks. They'll likely have a "lock" option in the settings for those who aren't used to holding the key, and there will no doubt be a hotkey to change it.
• Mouse (left click): Attack with guns/melee, probably based on your range from your target.
• Keyboard: Various skills
• QWEASD or WASD: Movement. Hopefully they do away with "turn in place" movement and force people to use strafing and mouse turning only. They couldn't get away with it in WoW, and they'll pretty much just die without putting up a fight in a game where you have to aim.

Dodging in Guild Wars 2 is done by tapping the movement key in the direction you want to dodge. Sounds good to me.

Oh, and I vote no on any and all combo systems. They never feel right, and break immersion. I just can't imagine doing a left swing, then another left swing, and only then being allowed to do some special extra swing if it were real life.

Combo systems tend to make a game harder to learn without adding anything to combat depth. Games should always aim for "easy to learn, hard to master."

I think we can agree that there are many ways to do combat. Question really is, what approach they will take.

WTB more DMO40k Info!!! >.<

Indeedy. I dont think we can even count the info released at E3 and the screenshots as concrete evidence of what the combat will be like only what it was like at the time. Still its fun to speculate with the current derth of info and the stuff they have released is all we have to go on.

since we are all tossing out control schemes here, might as well. If someone already posted this scheme or a very similar version, I apologize I must have missed it in the thread.
movement- wasd / arrow keys
turning- mouse
shoot/ melee attack 1(heavy blow)- left click
aim (toggle or hold customizable)/set up position (for devs and the like)/ melee attack 2 (wide blow)- right click
switch weapons mouse wheel and hotkeys, and have melee weapon as an equipable weapon, meaning you have to switch to it to whip it out, this ain't no CoD. as little as a thing is as making melee attack require equipping is, it changes gameplay. Simply put, when a player sees a space marine whip out his power axe, he reacts differently than if melee were just determined by range, AKA, he backs the fuck away. if a berzerker is chasing down a tac marine, all the while the tac shooting down the csm's throat, he doesn't want to automatically engage him as soon as hes in what is decided to be "melee range". the best plan would be to kite the berzerker, and continue to fire the whole time. and as awesome as the combos are in space marine, it shouldn't be about who can spam v (or in my case ins, im lefty) the fastest. Now i've listed 2 melee attacks, just generic heavy and sweep, but having 4 or 5 different attacks each better against different armor types or amounts of units with perhaps a block/parry command, would be great, having melee combat being about knowing when to sling off the plasma gun and charge in with the chainsword and the timing of blows versus blocking is ideal at least for me. It would really put some skill back into melee, something that seems to have been lost in CoD's magic one key quick knife. to even add on to that, make different weapons have different moves, or have attacks be unlockable as you progress, choosing to focus on dealing a lot of damage to one target or AoE sweeps. compexity isn't always a good thing, but in this case I think it would. As you can tell, I love myself some melee, and if you plan on getting BF3, I plan on getting your tags.

Hehe I like it of course Im a massive BF fan aswell and (epeen stroking alert) I to have an obsession with getting tags...34% of {GMA}RabidCaribou (me)'s kills on the stat tracker are knife kills.

from what i understand, if it is to be like diablo, i should probably stock up on mice for the inevitable left mouse button breaking...

Eh, gosh I hope circle strafing in combat does not happen, otherwise it will be like Age of Conan combat (not necessarily a bad thing) which consisted of a mind-numbing amount of circles while swinging your weapon!

Which is kind of why Space Marine's melee combat is great. Hack, hack, Super hack, dead. Next. Although in multiplayer it was a bit sucky since your had to keep up with your movement of the mouse. Looked a bit all over the place.

Again...look at TERA online's melee!