GMs made it like that. It's laaaaaaaaaaaame, but prevents afkers and stuff. ET because you can just beat ET with the min requirement and bring extras so you can get more mid gears. BG because people dual cliented chars to start games(WHEN ARE WE GETTING THE LOWER REQUIREMENT?) and for gears. I don't know about poring wars. I'm actually ok with BG and PW being limited like that to prevent people from just dual clienting in the other team and giving an unfair advantage, but BG seriously needs a revamp to make it more enjoyable/easy to start.