Actually, any player can 'apply' to be commander at the beginning of a round. After a short period of time the highest ranking player who applied on each side becomes the Commander for that side. Server admins can, of course, limit who can access their servers. So if you only let 2 clans into a game and each knows who they want to be Commander, then that person becomes commander (based on they are the only ones that 'applied' for it).

Sean Decker: Battlefield will always be first about fun and secondly about realism. Realism implies complexity. It is realistic to climb a ladder, lower the canopy, run through a pre-flight check, change flap positions, blah, blah, blah to fly an aircraft. That doesn't make it much fun though. We will have more fidelity when it comes to the sounds, feel and results of firing weapons.

Sean Decker: It is being built from the ground up for modders. We are already working with some of the best mod teams in the world on how to improve our tools and make the game features more accessible.