Possible build for WvW small group
Better to get TK over GK, you won’t be hitting a lot of Grenades anyways. Also, Pistol/Shield is better than Pistol/Pistol in most cases but it depends on your own playstyle.
Onto traits, you need Forceful Explosives to make Bomb Kit effective, also grab Incendiary Powder. Short Fuse is fine. Blood Injection isn’t that good compared to Protection Injection/Invigorating Speed, replace it with one of them. Same goes to Automated Response, either get Prot Injection or Invig Speed. Backpack Regenerator is fine.
Sigil of Bursting isn’t that great, better off getting Sigil of Torment (= extra condition we can’t apply through skills → cover up condition) or Sigil of Earth but that’s mainly for a Rabid setup. What is up with Rune of Strength? Why a power rune when you play condition damage. Consider Aristocracy if you are going to focus on stacking might a lot for your group. Trinkets should be Rabid and not a combination, you want to proc Incendiary Powder reliably.
Other than that, all good. You created quite a typical setup (6/0/0/6/2).
Thx very much for the feedback and tips!
I disagree with Wolf . . . in part.
TK can be overkill and is VERY 1v1 oriented or defensive in nature. It works well on a single target to pull/prybar but I almost always suggest grenades for WvW. Between them and bombs, you have a lot of active ability to avoid damage in smaller situations. There is so much utility and you can throw those grenades easily at your feet or mid range. Long Range it works with practice too.
I would only get rid of automated response and put 2 pts in firearms for either extra range or a reduction in the cooldown of the pistol (more bouncing blinds/confusion and more poison).
I agree on sigil of tormenting or earth. For runes I find lots of possibilities but Krait is rather incredible with Earth Sigil and 2 pts in Firearms. Antitoxin is a classic too.