I hope they will never put closed faction ingame. It would break one of the server core features, IMO. The whole point is the loners/casuals/noobs joining the veterans and become veterans themselves.
I agree, people dislike it because it takes them out of their comfort zone. Factions become the same-old same-old circle jerk of people who already know each other since 2238 or something.
No, in AoP you have to make do with what you have and turn those dumb n00bs into real men. That's how it should work. If they are too dumb or trollish, isolate them and hope they go to your rival faction so you can shoot them in the face later.
For people who like exclusive factions, I think that we just need more platoon-directed mechanics to help. There's also the fact we're gonna see more factions in the future, final plan is 8.
Then again, the quality of noobs has gone down lately. When I was a AoP noob, I was ZCing before I hit level 5, I wanted to do it so bad I got ahead of myself and we had to hunt down some shit before I could do it. It does piss me off a bit to see those level 12 n00bs just going on assigs and core runs rather than doing ZCs or at least heading off with guerilla deathsquad parties.