I think the bottom line is to just quit trying to fix what ain't broken; this shit's been going on longer than I've been here and the servers/community get more popular by the day with more regs showing up and staying.
Don't try to police our fun and risk ruining a good environment/atmosphere...it happens, yes, and sometimes it's pretty bad, but it isn't the "majority" thing nor do they always win and sometimes even results in the funniest shit you've ever seen like 20 teles in blue spawn on gravelpit or blue having full control of red's well base but still being unable to cap because of 10 coordinated engs spread out in the int room lol
TL;DR: If it ain't broke don't fix it. Quite worrying so goddamn much and just enjoy the GAME with your friends, both with and against them ;p It is IMPOSSIBLE to balance teams in any way shape or form. General skill is an iffy undefined argument as it is...and we have alot of skilled people at various classes...their skill vs particular opponents varies too. I can spy around most people but Neutron always finds me no matter what for example. Even if you sat there 24/7 manually moving people and forcing them to stay there, I guarantee you it'd either be onesided eventually or you'd be changing the balance every other kill.