This is a 1000 point list I've used quite effectively lately to my surprise.
HQ- Destroyer Lord ( joins wraiths )
W/ Sempternal weave, mind shackle scarabs, war scythe
160
Troops- 5x telsa immortals
5x warriors
150
Elite- Triarch Stalker
W/ heavy gauss cannon (or particle shredder)
165 (or 155)
Fast Attack- 3x wraiths w/ whip coils - 135
2x Heavy Destroyer - 120
Heavy Support- Annihilation barge - 90
Doomsday Ark - 175
Total= 995 pts.
Battle plan: lord advances with wraiths, Stalker twin links mainly for doom ark, weapon depends on who I'm facing ( hvy gauss for armor or large blast shredder for troops and to twin link multiple targets. Troops are min so I hide them for the most part. ( most missions give you additional scoring units most of the time anyway or warlord trait as I always pick middle table for this list) everything else supports. Though the troops are lacking I have lots of other high priority targets, I've played this list a couple times vs. chaos/tau mix, orks and soon against new eldar. Everytime I usually wipe them off the board and half the time lost all my troops but either my warlord was scoring or I had fast attack or hvy support as scoring to assist aswell. All in all I love this list and the twin linked doom ark works magically

but I'd like to hear dakkas opinion!