Good ideas, all, especially with the inflict harm bit. Hadn't thought of that!
I'll just point out that Acting Under Fire's 7-9 result always comes with a downside ("worse outcome, hard bargain, or ugly choice"), and this move doesn't seem to have a downside at the 7-9 level, so I'd be worried about players abusing it.
That's a good point, too. I've been mulling this one over for a bit and not sure how to proceed. On the one hand, I think it's not necessarily a big deal if the players can sneak around effectively. On the other hand, there should probably be a bigger risk than what's presented.
Bear with me, I'm thinking aloud.
Sneaking is a means to an end, like violence. Sneaking is about moving someplace to:
• Bypass an obstacle (guard, sentry, watchdog, etc.).
• Gain an advantage (for when you want to follow up with another move).
• Discover something (scouting, shadowing someone, etc.).
Still mulling over how to make this work, exactly.