I'd be interested in hearing opinions on this, not of the "You are playing it for the roleplaying!" or "Munchkin!" variety, but opinions on the actual mechanics.
A Dark Eldar starts with a 30 Agility, and gets a 2d10 bump, for an average of 41, and all have Matchless Grace, for an Unnatural Agility x2, for an average bump to AB 8.
An RT character starts with a 25 Agility, can bump that to a 44 through Origin Path, gets 2d10 to add for an average of 55, and you can get Unnatural Agility from Disturbing Grace, and other places.
Seems out of place, even without disturbing grace, any effort at all can get you into the 50's on the human character, where you need to roll a 20 to get the Dark Eldar there. Unnatural Agility isn't particularly thrilling, as far as I can tell, as much uses the unmodified bonus, like movement, and few things are determined by the agility bonus itself.
Long story short: Origin path lets you boost Agility to 44 before rolling, or Ballistic Skill to 48 before rolling, or Fellowship to 46, gives a bunch of talents and skills and perks, what do the aliens get to offset it? The pleasure of being an alien?
I hope I am missing something.