I've been switiching sides for a few TODs, now. I've met, and have enjoyed flying with many former adversaries, and this has enriched my AH experience.
For nearly three years I flew only Rooks (that's where my Squad was based) and I think, upon reflection, that this not only limited my individual skill growth, but also limited my personal interaction within the Community.
ENY is no longer a Factor for me, because when I log on...I look for the side which has the fewest numbers...I can fly any aircraft I want.
Just some thoughts....