The implementation of Kasumi's Tactical Cloak ability is spot-on here. In the video games, Shadow Strike was a melee ability with some movement, so you could change the ability to give Kasumi movement and then damage akin to Shepard's Biotic Charge, but this current version works, too.

The Master Saboteur ability on Kasumi and equivalent powers on other characters seems like a near-immunity to drawing Escalation cards, lowering the chance of drawing those and effectively adding time to how long the squad can complete each mission. I would have loved to see more active abilities for Kasumi, but I can't deny the impactfulness of the existing skill set.