Each Sunday I go and play X-Wing, and people will often say "you wanna play Rebels or Imperials", to which I often reply "It doesn't matter, play whatever you want... who cares if it ends up being Rebel vs Rebel, or Imp vs Imp..... Tournaments don't care so why should we? In fact the last tournament I was in, there was only 1 single Imp build and every other build was Rebel.... So that kinda shatters the argument that that the game can't have a 3rd faction, because this game is Rebel vs Imperial.... in my eyes it's Rebel vs Rebel, since the overwhelming majority in my local meta is rebel builds, and always has been since I've been playing. (I'm sure it differs from place to place, but that is simply my point of view).
But if you are a purist, who wants the game to be strictly Rebel vs Imperial, how woudl you feel about a tournament rule that states you MUST have 2 builds to enter - One Rebel, and One Imperial. You MAY share upgrades between the two builds, but must be prepared to fly EITHER build at any given point in time, and this way no mirror matches would be permitted - even in a tournament. Thoughts?