Honestly, I don't see why it's a problem for there to be an edge that makes a strong skill stronger unless that edge pushes the skill over into "unbalanced" territory. Maybe neuro+edge is unbalanced; I don't know. Shoot, maybe plain old neuro is unbalanced.

Smoke and mirrors, by the way, seems like a great edge in that it actually makes the class a little more fun. And it's not obviously overpowered. Do I wait for the guy to walk to me, or do I try to vanish across the place where I can't hide and hope I land next to him, with the understanding that I might land in the place where I can't hide and thereby spoil my stalking? Smoke and mirrors presents the player with those kinds of choices.