[Hamsterball]

Although I agree that the list looks promising, I think the 1000pts list suffers from the same problem as the 500 pointer, Anti-tank. At 1000 points, the chance of a thick-plated tank or two showing up is very much higher, so I think you ought to switch some things around:

hq
Farseer 123
-Singing Spear, Spirit Stones, Guide, Doom

(IMO, you don't need both powers. Doom is hands-down the more effective of them, and will carry the day perfectly fine on it's own, since the avengers you intend to run him with have a nice BS of 4. This cuts him down to a healthy 83 points and frees up a great deal of points that can be put to better use elsewhere.)

elites
Waveserpent 100
-Twinlinked Shuriken Cannons

(Since this transport is going to carry something as juicy as a DA bladestorm unit and a Doomseer it'll likely attract the enemy's attention and heavier weaponry. The last thing you want is for that unit to get stranded, and the easiest way to avoid that is by constantly keeping your WS on the move. Spirit stones ensures that it'll keep moving even if it suffers a crew stunned result. While it doesen't happen often, it does happen, and with Eldar that can mean the difference between winning and losing. for a mere 10 points spirit stones are no-brainers on every transport, at least in my army.
I'd also considering upgrading those shuricannons to Bright Lances, or at least EML:s, for some added Anti-tank. Contrary to what many believe, Wave Serpents are one of the most reliable places to mount one-shot weapons, since mathhammer has proved that twin-linked BS 3 actually tend to hit more often than a single BS 4 shot. If you search around on the forum I'm sure you can find the calculations.)

troops
10 Dire Avengers 147
-Exarch, Bladestorm

(If you could find the points to outfit the exarch with twin avenger catapults you would turn this already excellent squad even better! It's just 5 points for a healthy boost in shots.)

10 Guardians 95
-Scatter Laser

(I'm not sure if the points will allow you to field warlocks in these units, but if you can squeeze a conceal-lock in you will increase the unit's staying power by a great deal. Another bonus with this is that with conceal the group isn't dependant on hugging cover and can focus on finding the best position to fire that lazer.)

10 Guardians 95
-Scatter Laser

(see above comment)


Heavy Support

2 War Walkers 140
-4 Eldar Missle Launchers

(I'm not sure about EML:s on these, simply because I've never tried it. test it out, but consider switching them out for Scatter Lasers. They simply rock!)

Fire Prism 150
-Holofields

(Great!)

Fire Prism 150
-Holofields

(also great!)

That was my 2 cents. The list was really good as it was, I just tried to improve it in the one area I felt it was lacking. If you don't like my changes, by all means play with the original list; I'm sure it will perform great!

With regards
Hamsterball