In every game up to Fallout 3, you were always against the Enclave. As my username suggests, that kind of bugs me. You never have a choice in who you support, and the only people you can support is the Brotherhood of Jerkoffs.
Yeah, in Fallout New Vegas you work with remnants. Remnants. You fight with them for one battle, and no matter who you support, the end is always the same. The Enclave gets kicked out of the mojave. I hope that in Fallout 4, the Enclave will be a faction that you can join. Not work for, but JOIN. For any faction, I hope that there's the option to join them. That way, you will be able to be a part of the faction you support, and be able to lead them to total victory.
Especially the Enclave.

IF YOU SUPPORT THE BROTHERHOOD OF STEEL, THAT IS YOUR CHOICE. I'M NOT LOOKING FOR ARGUMENTS, RATHER, PEOPLE WHO AGREE WITH ME, AND ENCLAVE SUPPORTERS.

Fallout 4 ideas go here; http://www.gamesas.com/topic/1367279-fallout-4-speculation-suggestions-and-ideas-thread-60/