I almost agree with Glassjaw: ENY is a very, if not the most irritable, aspect of the game (aside from some of the maps). I don't know that it really accomplishes what some think it does, since I've been on airfields overwhelmed with cons, yet still am told I can't fly certain planes.
That said, the one thing ENY has done, as much as I hate to say it, is to get me to try different planes. I don't know that I would have come to know and love the FM2 Wildcat without ENY.
Still, ENY sucks.