I was testing out many builds in wvw as dual dagger thief.
as in result Trickery/Shadow Art were the best/must for sustain style type of d/d players.
Last choice would be Deadly Arts or Critical Strike. (Your choice)
Deadly arts provide nice mug damage + heal + immobilize + stronger aa’s and good damage overall.
Critical Strike is more focused on backstab damage burst with infiltrator signet might’s and reduce cd + 100% crit for stealth-backstab.
I personally like deadly arts more but its your choice.
for runes i use traveler mostly for perma 25% movement speed + free extra utility slot.
but u can always choose pack/ogre/strength/hoelbrak.
http://intothemists.com/calc/?build=Vh;4Rw-1-6-FOFd0;9;4KMI;0247237148;4INW46;1t_MTt_MTn-F9YmwI;3HbH6IbI6JbJbC30C-2s;5N2EqkYCqk2Ewk2Ew;9;9;9;9;06k3b (DA Build)
Foods : Bowl of Seaweed salad / Plate of Orrian Steak Frittes / Plate of Truffle Steak / Bowl of Sweet and Spicy Butternut Squash Soup (those are the best)
Utility : Sharpening Stones / Maintenance Oil
This build is just 1 of an idea for the users that wana stick with d/d (Because d/d is love, d/d is life!)
But dont forget D/p is always the best choice after the patch (S/d is also ok but after acro nerf D/p is our best bet) Now as D/D we have to play more cautious since we are even more squishy after the patch!
I just hope anet revert our SE back.. ;( other than that i am happy with the patch even cloaked in shadow moved to gm ;(