I've seen, watched somewhere (I recall researchers for some big game developer, could have been EA ) that over 60% of ppl play, only play vs the comp no matter what game, even if it was intended to be multiplayer (first person shooter, RTS, etc).
That's alot of ppl you are trying to turn away from the game. I do play EF every now and then and would focus more on it myself if the population cap was removed entirely for all sides.