GW will not be addressing any core rule updates to fleets in Armadas so we can't address re-working the Dark Eldar. That being said, is there anything still not addressed in the FAQ concerning the DE? Assume we can make adjustments but NOT core rule changes. For example, incorporating the "Power of Pain" rule is something we can address with the FAQ. Changing how DE ships move or creating a DE grand cruiser is an example of something we can't address.
Please do not reply to this with a debate as to why we can't re-do the DE. We just can't. If it can't be addressed by the FAQ before this all goes off to GW, then there's nothing to discuss.