Um, nope. Not worried in the slightest. If they want to play, good for them because it's an awesome game. If not, who the hell cares? The game makes it extremely difficult to pull CoD tactics in the crucible. Camping is usable, but you won't get far with it, nor do you have an excess of "noob tubes." I never got to play the beta, but based on the Alpha the tank was the only concern, so long as you're not on a cohesive team.