I typically do great on Carrier, but it's a total campfest. Sucks balls.
Aftermath is pretty cool. Like any map, if you want to do well, you need to stick to the perimeter. I tell people who hate Aftermath to stop going up on the ramp in the middle. "That's the killbox," I say. "That's where people go to die."
Pretty much this. And some maps have multiple high-traffic areas.
The problem with carrier is that there is not pixel distinction anything looks the same. too much under color, not like the other maps where you can see who is your enemy and friends.