clearstream
(He, Him)
As Uncanny Dodge is not resistance, it would stack with this. Who else would benefit? Sword-and-board Fighters could value resistance as it doubles-down on their better-defense/worse-damage style of fighting. Albeit it then possibly treads on Barbarian toes...of those 2 options I would just let it give the rogues resistance ability if you don't have it and enhance it if you do.
I feel like resistance is a great suggestion. Yet for me not the right direction for this feat in terms of the overall game. That's highly subjective: each commentator will have their own sense of the mechanical gestalt.
What did you think of @jaelis' step-and-stab?Maybe add the proficiency bonus to ac against the attack if you have it and some next turn damage enhancing ability against the enemy that triggers it.