Deluxe editions with unnecessary swag are fine... I often buy them myself. However, deluxe editions with special unlocked content are NOT fine... as someone mentioned above, it turns what should be a pleasant experience into an unpleasant decision that makes you unhappy either way -- either you worry that you're missing content, or you feel like a chump paying extra for something that will probably eventually be available for free. I don't see how you can possibly offer an extra faction for a multiplayer game that is not available to everyone without distributing it to everyone in locked form... and that will get unlocked in a jiffy.
If they want to nickel and dime people, they should do it with modular DLC's that you can pick and choose. At least that's honest extortion.
If they want to nickel and dime people, they should do it with modular DLC's that you can pick and choose. At least that's honest extortion.