This is an all around build for PVE and WvW. http://gw2skills.net/editor/?fZEQRAoY4alsMpzpdPx0J8PNBNBt9DGeI4uGlYGaFAA-TVCBABVcSFqZ/hKVV5MlgYp8DgjQglqVkn+HGeQABAQAuZb2mtZbezbezH9oH9oDdodzbO0bO0bWKgxGGB-w It is mostly based off of an older build by Wish found here https://forum-en.gw2archive.eu/forum/professions/thief/Building-a-better-D-D-thief. It has decent sustain as well as decent damage. It is a standard WvW D/D or D/P roaming build with Might stacking ability to account for loss of damage from Critical Damage nerf.
Traits are preferably 2-6-6-0-0 as link provided suggests. They can also be 0-6-6-2-0 with either Fleet Shadow, Power Of Inertia (preferred), or Descent Of Shadows. For WvW I prefer to use D/D and D/P instead of SB swap, this is because enemies do not expect you to have both and will be surprised. Some enemy tactics that work well against D/D do not work well against D/P and vice-versa, this puts them in a bad position. Also you can escape just as easily if needed with D/P as you can with SB IMO. In PvE it’s better to use SB swap with either D/D or D/P (your choice) for range and tagging enemies during farming. In terms of Defense the build is not very tanky, but not pure glass either. It can handle a full spike of damage from Dwayna for instance bringing you to around 800 HP, but you will not instant down. I have never had problems in a PUG Dungeon run, however there are more specific builds available for each dungeon that will work better, but overall this build can work.
With Superior Runes of Strength, Superior Sigils of Strength, Plate of Roasted Cactus, and 5 points into SA you can average 14-18 stacks of might during combat. If you trait for Power of Inertia you can hit 20+ stacks, this will allow you to keep same amount of power as if you were traited for Mug, and gain another 1000 HP, you obviously lose the damage and healing from Mug though. In WvW combat expect around 10-14, but against pure tank builds 14-18 is definitely possible because you can keep the pressure up. Just keep in mind the longer you stay actively fighting, the more damage you will do. This means with full buffs in WvW plus might stacks you will be around 3k+ Power. If you are not solo and playing with another class that gives might it’s very easy to hit 25 stacks of might in combat. A video example of the build/might stacking can be found here, http://www.liveleak.com/view?i=91e_1405380098 , does not include any PvP. If there is enough interest I may consider making an actual PvP video, I made this quickly today because recently on the forums a lot of people have been asking for such a build so I thought I would share. Especially since the new food really makes this build work well. Against glass expect 8.5k-11k+ backstabs (more than enough to down them with Mug and CND damage as well), and anywhere from 4k-6k backstabs against Tanks (They will hit you like a wet noodle however, you will probably win if you keep proper pressure up). However a build to watch out for is the Dire/Perplex condition build (But you can always leave, because they won’t have to enough damage to actually kill you outright, only if you push as well)
Fully Buffed WvW Stats
Power: 2,658
Toughness: 1,386
Vitality: 1,482
Precision: 1,937
Ferocity: 985
Condition Damage: 100
Healing Power: 300
Armor: 2,504
Health: 16,465 (17,124 with WvW bonus in video)
Critical Hit Chance: 60% (With Sigil of Accuracy, 53% Without)
Critical Damage: 216%
Thanks for reading, and hopefully this helped you!