I think when at the Mcoms near the B flag, we need people on every area to clear it effectively.
For example, on side stairs, we need people covering front locker room to stop enemies coming round and killing the people on side stairs. The front locker doorways are very narror, so an LMG (e.g. the RPK, especially with the 200 round mag) would be very effective hear in my opinion.
I don't know how effective using flag stairs would be, because there are obviously 3 points that look down upon those stairs, but it could be used as a distraction for people to move up from side stairs through to front lockers and off to attack the B Mcom.
For A Mcom, I think using side stairs is a good covering position, and then people from front stairs can move up and attempt to arm A, while some possibly using flag stairs to kill enemies rushing across to disarm A.
Also for A, I think 1 squad could provide good support for the Mcom (obviously this is only if B is destroyed. 2 from the squad cover across using mid-lockers, while the other 2 cover back lockers. I think the 2 covering back lockers should be positioned further back to avoid the whole squad being wiped by a grenade, m320 or usas.
