More thoughts on things I'd like to see changed for Eldar

Farseer Powers

Fortune

instead of re-roll armour saves, re-roll successful to hit rolls against that unit in the opponents shooting phase.
This would better reflect the description and adds to the Eldars elusive nature.

Warlock Powers

Wraithsong (bongsinger)

pick a unit or vehicle within 6", if psychic test is passed then that unit gets +1 to all saving throws until the next Eldar turn (an unmodified 1 still fails though). If the target is a vehicle then -1 to dice rolls made on the vehicle damage chart (to the minimum of 1)until the next Eldar turn.

Court of the Young King

An addition to what I have previously wrote

Exarches may choose any wargear of their aspect but may not have any warrior powers.

Warriors of Khaine; the Court of the Young King and any Autarch with it have the Furious Charge and Counter Attack universal rules.

Warp Spiders

Surprise Assault: Warp Spiders get the Scout rule.

Rangers

An expansion on what I previously wrote

5-10 Rangers

Wargear: Camocloak, Eldar Long Rifle, Shuriken Pistol

Special Rules: Fleet.

Upgrades:

1 ranger may be upgraded to Pathfinder (+1WS,BS,I,A,Ld,Sv)

The Pathfinder may replace his long rifle with:
a Pinpoint Rifle
(Ap 1 on a 4+)
for 10pts

or a Prism Rifle:
(Rg:48" Str:X Ap:3 Heavy1Sniper) /
(Rg:48" Str:4 Ap:5 Heavy1Blast)
for 20pts.

may take a Poison Knife for 10pts

Warrior Powers:
Master of Stealth: Stealth, Infiltrate universal rules

Pathfinder: Scout, Move Through Cover universal rules