How about a job trait that, every time you score a critical hit (melee or ranged), you have a 5-10% chance of resetting your Sneak Attack/Trick Attack recast timer?
In zerg situations (aka, pretty much all of the endgame these days), SA/TA recast timers are too long
Most of THF weaponskills were designed to be used with SA or TA (Mercy Stroke, Rudra's Storm, Shark Bite, Mandalic Stab etc) - this would allow them to be used more effectively.