I dont post that much, but I cant help but read the comment by the op and laugh.
Lightning Charge Useless, Assassins underpowered .. Highly laughable.
Deception Spec assassins when geared right have solid short burst dmg. from 2 VS/ RECK/Overcharge/ Shock/Discharge/ Assassinate if not ready which is rarely .. Low Slash Assassinate or Maul then Assassinate.. Equals usaually a dead victim in PVP, in PVE even less work.
So there is your burst low survival Assassin Spec.. and still has 6 forms of CC Electrocute, Jolt (on 4sec CD), Low Slash, Spike out of Stealth, Mind Sap while in Stealth, and a 2 sec cast whirlwind. If you have trouble being detected in stealth there is this skill called blackout use it. There is also a slow in your toolbox..
You also have Force Shroud which resist all tech and force dmg, and deflection which does a solid job against all white dmg..
OH and guess what you can still taunt people and lower their dmg outpoint on your group members by 30%
Then your lightning charge spec that goes with Madness .. A spec that can easily top warzones in overall dmg it has been done by many many times.
Skills like Creeping Terror with an intant 2 sec root from 3o meters out,, Death Field with nice big AOE dmg plus a solid heal ... Yes I said HEAL on the backend for you. Dots from Lightning charge they can do upwards of 4k for its duration, INstant crushing darkness that does upwards of 3k dmg over duration. and other goodies like instant WW and shorter CD and guess what Heals.. for every dot tick that crits.. guess what you get a heal.. Yes a HEAL .. Let me repeat that a HEAL
Then there is Darkness Spec.. Survival, HEALS, solid DPS, out of stealth Spike, plus longer duration on Force shroud
... At this point I m tired of typing and just cant believe someone believes the assassin is useless in PVP..
Madness and Deception Spec SIns may be a bit squishy but they are not underpowered at least not in pvp.
And well Darkness people cry about that spec being OP.
I think you really need to take the time to learn the mechanics of the class and how to use the nice sizable toolbox your given with a Assassin.
And if you don't believe what I m saying just check out the many streams and you tube videos of Sin PVP, or hell my own streams and I m not even the best Sin out there.. and you will see we are far from being a crappy class as you explain it to be.