I'd say the reason deadeye rifle is trash in pvp is because to use it efficiently you need to kneel
and kneeling is bad.
GW2's "range" is actually pretty dang short range. even shorter when you realize how many shots u need to kill.
therefore, mobility is king. ranged fighting turns into kiting the far stronger damage melee opponent. as your only advantage is you can hit him, he can't hit you.
but kneeling takes that away. you lose the ability to kite, and thus they will reach you fast. add to that as a thief. you tend to have low hp. low armor. so your need for mobility is that much greater
if you don't kneel. your dmg is.....well...unimpressive.
plus we have ranger longbow. which has the same 1500 range u do, while maintaining its mobility. plus a bit more range if you have height advantage......
how to fix this?
i'd say one of the following
option 1: give rifle 1500 range even when not kneeling. and stun/daze immunity when kneeling (but not knockdown/knockback)
also, when kneeling. give the rifle the same height advantage range bonus as longbow.
option 2: when kneeling, make it so u can move. but at a slow speed (as if you crippled)
option 3: do away with kneeling entirely. make its dmg default for rifle. but have some skills stop you to fire (think ranger longbow's #5)
Option 4: flat out 100% endurance recovery boost (taken from a ranger skill). considering you can't move, being able to dodge more often would help alot.
now for another issue...Cursed bullet.
so i'm not sure if this was intentional. but this "bullet" has a rather long flight time to target.
whats bad about that? well.....theres a 3 secound cooldown for stealth attacks......which means when you shoot the cursed bullet, your waiting for it to hit the target, before you can use any other skill. so your sitting there in stealth, waiting for it to hit.
compare this to other stealth attacks, they hit instantly. allowing you to get stealth over with and use your other skills. not have a buffer delay.
so the fix for this? make it hit like a normal shot. don't do this 1-2 second wait time for it to hit the enemy and let you continue shooting like normal. your not a necro with a staff, your a projectile with a gun.