As for "one person loses a BG for everyone," Yes, it CAN happen. Especially in IoC, where one idiot glaive driver tries to drive up to the horde keep instead of attacking from the overlook. One person is all that's needed to defend a base, do you know how many AB/BfG matches I've been in that have been needlessly complicated because some ditz didn't check that they were the last person at a base, and abandoned it to go fight for some base we didn't need? Then one horde comes rolling it, nabs the flag, and we lose the base. Even a poorly geared player can call out an inc. Same goes for EotS, in fact. Or how about the only healer in a WSG/TP? I'm usually the one stuck with carrying the flag, and I can recount SEVERAL instances of being killed where I would have otherwise survived because our healer was bouncing around pointlessly healing people in mid.