D/P is absolutely and arguably the most viable thief build available. Looks to me like you’re using a WvW build.
Divinity runes got nerfed so they’re pretty much worthless to have. Those need to be switched with something like scholars or strength.
The traits look a bit off, but overall not unreasonable. You’re kind of riding an awkward setup in the Critical Strikes line. SA is fine, though some people prefer hidden thief over infusion. Thrill of the Crime is a much better choice in the Trickery line over long reach.
I’m not sure what utilities you run, but I think your crit strikes line could look something more like 1/6/12, or if you still prefer, 3/6/11, depending on what you’re trying to do. I’m under the assumption you’re not using a build with more than one signet and are probably focusing on backstabbing for damage, thus ruling out the usefulness of signet use with an emphasis on securing critical attacks.
If you’re in sPvP, you’re out of luck on stab builds altogether. Most thieves now use builds focusing on Acrobatics and Trickery to stack might and turn fights from even numbers into favorable numbers/finish foes off. The thief is very weak in sPvP at the moment.
For WvW, dire condition builds are the roaming meta; so you’re fighting substantially tankier targets than you probably were a year+ ago when most roaming players were also in berserker stats. You’re also running cavalier armor which will reduce your power stat and subsequently cut damage. Ferocity, when it was implemented, nerfed critical damage dealt by around 15%, so that is also cutting your damage.
Huge-damage stab builds are pretty much locked into signets, which you can find my build posted in the “Show your thief build” stickied thread here. I do believe mine was posted fairly recently so it shouldn’t be too hard to find.
The meta has evolved and players have gotten more skilled to better counter thieves in general. Currently the class is in a weird limbo of having the best PvE damage in the game while suffering in the PvP formats from utility problems and previous damage nerfs paired with metas based around more or less durability and the exploitation of gimmicky mechanics which the thief has few ways to deal with.
Ah yes, I am using a World vs World build and the divinity runes cost me 10gold each back in the day… What a rip.
For the Crit stikes line, I implemented 3/6/12 because I didn’t like the fury for 11 seconds with a 30 second cooldown. I wanted something that lasted throughout the battle and gave me an upper edge in crits. As you have correctly guessed my main damage comes off of back stabs and 100% crit strike from stealth gives an added edge to that.
The notion my build was developed on around was to get the most out of crit damage/percentage and yet be somewhat tanky so I could live long enough for a small scrimmage. From what you’ve noted, is it better to buy new armor without ferocity? Do you think ferocity is a big of a game changer?
I will be looking at your build now, cheers