Okay, a lot going on. Here's a new map:
The pale yellow line is the smoke grenade. The goldenrod line is Esh's robots.
The smoke grenade provides concealment to those inside it, and presumable to those outside from those firing in. So that's 20% miss chance both ways on those.
The Microbots specifically call out the creatures firing out, so no 20% miss chance on them, from your perspective, unless they're also in the cloud.
Esh, if you want me to move that circle, tell me where you'd rather I put it.
If I missed anyone's repositioning, tell me where you would like to be within reason and I'll put you there.