Allow it to trigger on Invisibility and Rogues would be (gasp!) bordering on decent again.
Guerilla trigerring from Invis/ShadowWalk makes a sense. Rogue playstyle would be more focused about sudden damage burst. So hide, bank up AP then burst.
I see rogue as a "Single target damage burst specialist". The new skill Adrenalin goes exactly this way.
Rogues could, likewise, become a lot more playable if the Guerilla talent was given a bit of a tweak. Causing it to give a passive +25-50% damage to backstabs aswell as the +50% for sneaking.
Adding a plain bonus to back-stab doenst promote damage bursting. More over it would literally lock Guerilla+Backstab. Not very good for building options/freedom. Its better make Guerilla interesting for archers or other non backstab builds too. Just imagine an Executioner class - two handed melee in power stance, shadow walk and guerilla talent. Youk :-]
Suggestion:
I say, make Guerilla trigger from from Invis/ShadowWalk /Sneak. For balance tweak, get noticed that 2 Scoundrel's status related skills have 150% dmg. IMHO That is not correct. So nerf these Scoundrel's 2 attacks skill(s) a bit. Minus 15%? That way general damage would be similar but bursting promoted.
Make a character invisible working on the battlefield also makes other classes more viable. Like tank who soaks the damage (taunt enemy) when rogue is preparing.
