I have seen plenty of arguments about the upgrade distribution model being unkind to those who only play a single faction (e.g., the new core set is bad value for Scum players; the Starviper is unfair to Imperial players).
In my opinion, there is far too much depth to this game to limit one's self to a single faction. If you are doing this, it seems to me that you are missing out on most of what X-wing offers, and expansion design and pricing are extremely friendly to those who want to try everything out.
For those of you who exclusively play a single faction, why do you have no interest in the other two? Do you disagree that you are missing out on 2/3 of the game?