I'd like to mention that bug-hunt mode really saved me recently on a mansion mission. It turns out that there was a church matron stuck in a small inaccessible room such that I had to shoot through a couple of walls to get to it - but the room was so small that the matron didn't move at all, ever - and so I couldn't find her with my Aye phone.
I would have spent ages looking if it wasn't for bug-hunt mode. (I only had two aye phones on the mission; so I was still thinking that maybe the enemy had slipped past me while I was trying to sweep through the map, and so I was doing second and third sweeps...)
Speaking of mansion missions. The text at the start of the mission seems to imply that we should just try to grab some loot and then leave, rather than trying to kill everything. And that sounds like a pretty cool mission idea - in that you're sneaking past guards, grabbing the high-value loot, slitting the throats of those who you happen to have their backs turned at the wrong time... The main problem is that it takes so long to find the valuable loot that by far the easiest way is to just kill everyone. Maybe the grab-and-run strategy would be more viable if all of the high-value loot was stored just in a couple of rooms on the bottom floor. That way we'd know that if we got to those rooms, we'd found the bulk of the high-value stuff, and so it would be reasonable to run rather than stay around trying to enslave everyone. ... and it would help if the spare equipment from our craft was stored in the exit area so that we didn't have to find that too. For mansion missions as they currently are, I wouldn't even consider staying to kill everyone unless I was losing badly. (Of course, enslaving everyone is still super-high value even if there was no loot at all; so most players would probably stay until the end even if grabbing the loot was easy.)
While I'm here, I'd also like to say that I've really enjoyed the new underwater missions - Particularly when I only could get to them with my air-car, and so I had a tiny team. There was a nice sense of planning and adventure in choosing the right 4 gals for the mission; choosing the right equipment; carrying around oxygen tanks; hiding behind things; deciding whether I have enough oxygen to gulp a few doses just for the extra stamina, or if I should just take it slow for a few turns... sea monsters swimming out from the hole made by the blown out (h)elerium core; cross bows and harpoon guns... ... Yeah, it was pretty fun - mostly just because it was quite different to the other missions.