Without the Wraithknight, I can't see how the new Eldar codex is not the strongest in the game.
The Wraithknight is not only the best unit in the game, but it might be the best unit in the game since 2nd edition. Certainly Heldrakes weren't as nasty, and I don't think that 5th edition Falcons were as nasty.
So, add the best unit in 5 editions, to what is already the best Codex in 7th, and you have a facepalm moment.