I played my first 5th edition game with a 1750 variant of this list, and ended up coming out on top fairly decisively. I've made some changes since last night (mostly adding 100 points, since that's what our next tournament is), and from watching what some other eldar players were doing with their lists.

HQ
Autarch with warp jump generator, mandiblasters, powersword, and fusion gun
125 pts

Farseer with runes of warding, spirit stones, guide, and eldritch storm (maybe mind war)
130 pts

Elites
8 Striking Scorpions, Exarch with scorpion claw, stalker, and shadow strike
180 pts

8 Striking Scorpions, Exarch with scorpion claw, stalker, and shadow strike
180 pts

Troops
10 Dire Avengers, Exarch with 2 shuriken catapults and bladestorm
152 pts
Wave Serpent with twin-linked shuriken cannons and spirit stones
110 pts

10 Dire Avengers, Exarch with 2 shuriken catapults and bladestorm
152 pts
Wave Serpent with twin-linked shuriken cannons and spirit stones
110 pts

5 Pathfinders
120 pts

5 Pathfinders
120 pts

Fast Attack
6 Warp Spiders, Exarch with 2 deathspinners, powerblades, and withdraw
174 pts

Heavy Support
Wraithlord with 2 flamers, brightlance, and eldar missile launcher
155 pts

2 War Walkers, each with 2 eldar missile launchers
140 pts

Total: 1848 points

I'm a little torn about where to put the farseer, I kind of want him to go with the DAs and add eldritch storm to their massed shurikens, but i know I definitely need the farseer, cause in the game last night, he was one thing I didn't have and I ended up really regretting it (first game I've played that I didn't take a farseer). Anyway, suggestions?