3. Sofias current build: even if it seems to be kinda odd
Assassination Talents (23 points)
Improved Eviscerate - 3/3 points
Increases the damage done by your Eviscerate ability by 15%.
Malice - 5/5 points
Increases your critical strike chance by 5%.
Murder - 2/2 points
Increases your chance to hit while using your Sap, Ambush, Garrote, or Cheap Shot abilities by 5%.
Ruthlessness - 3/3 points
Gives your finishing moves a 60% chance to add a combo point to your target.
Improved Slice and Dice - 3/3 points
Increases the duration of your Slice and Dice ability by 45%.
Relentless Strikes - 1/1 point
Your finishing moves have a 20% chance per combo point to restore 25 energy.
Lethality - 5/5 points
Increases the critical strike damage bonus of your Sinister Strike, Gouge, Backstab, Ghostly Strike, or Hemorrhage abilities by 30%.
Cold Blood - 1/1 point
When activated, increases the critical strike chance of your next Sinister Strike, Backstab, Ambush, or Eviscerate by 100%.
Combat Talents (2 points)
Improved Sinister Strike - 2/2 points
Reduces the Energy cost of your Sinister Strike ability by 5 Energy.
Subtlety Talents (26 points)
Master of Deception - 5/5 points
Reduces the chance enemies have to detect you while in Stealth mode. More effective than Master of Deception (Rank 4)
Camouflage - 5/5 points
Increases your speed while stealthed by 15%.
Elusiveness - 1/5 point
Reduces the cooldown of your Evasion, Vanish, and Blind abilities by 15 seconds.
Initiative - 5/5 points
Gives you a 75% chance to add an additional combo point to your target when using your Ambush, Garrote, or Cheap Shot ability.
Improved Sap - 3/3 points
Adds a 90% chance to return to stealth mode after using your Sap ability.
Improved Rupture - 3/3 points
Increases the damage of dealt by your Rupture ability by 30%.
Preparation - 1/1 point
When activated, this ability immediately finishes the cooldown on your other Rogue abilities.
Improved Cheap Shot - 2/2 points
Reduces the Energy cost of your Cheap Shot ability by 20.
Hemorrhage - 1/1 point
An instant strike that damages the opponent and causes the target to hermorrhage, increasing any Physical damage dealt to the target by up to 3. Lasts 30 charges or 15 seconds. Awards 1 combo point.
As you can see I gave up backstab & ambush. With this build you can use basically any weapon as long as you got a slow mainhand for the base dmg with hemmo/ss. First of all I consider this build to be more grp friendly as you spec in many talents that support rather than do raw dmg, & thats exactly the point: you will lack in burst dps that you can frontload, but the skills make up for it imo. In the contratry to the backstabber builds your dmg comes from your finishers, not heavy critting backstabs. My base attack is hemmo all the time, it may not do as much dmg as ss or (god forbid) backstab, but hemmo isnt meant to kill, your finishers will

Hemmorhage is what I would consider the best combopoint generator, even faster than seal fate, especially with initiative! Upside of this build is, that you get the best skills from the subtlety tree like MoD & camo, imp sap & rupture, & last but not least imp cheapshot which makes your combo point generation even faster when you do the opener you will do 90% of the time anyway. Now that you are spamming finishers in a high rate your Ruthlessness & Relentless strike can kick in to its highest use & you can decide which finisher is most appropriate for your current target ( dont wait always for 5 pts btw, a 2/3 point rupture or slice & dice or kidney may be as good as well & last until the mob is dead anyway). However, the downside is still the lack of burst dps you struggle to be at the top in the dmg done mod, but its doable - & what buggs me most of this build is the lack of an opener when the target is immune to stuns well you can do a garrote, but without the 20% added dmg from opportunity (garrote sucks anyway) so it might be best in certain situations to just walk up & hemmo away.
Variations: there are some points you can move around as you like, basically the 3 pts in imp slice & dice & the 2pts in imp ss. I respecced again to get this abilities only for MC, since hemmo & rupture will use a precious debuff slot & the 40 man raid will kill you if you keep kicking better debuffs off the bar, its a better advice to just spam ss & slice & dice or cb evi. However, this 5 points can go anywhere: imp kidney if you <3 to stun a lot, imp gouge if you <3 to have a tick more energy before the stun ends (but you dont need it like a backstabber). I had my 5 pts first in elusiveness, because I thought the low cooldown + prep would rock in Battlegrounds to do your cooldown abilities even more often. Anything goes
Conclusion: you are more a support rogue than a pure dmg monster, but your skills make up for it & in the long run you can dish out the hard hits as well, just not in a burst mannor. Thats why I consider this build to be more pve oriented, but nontheless you can kick some asses when you cs, hemmo 2 times & cb evi even before the stun runs out.