4 hours worth of playtime, level 11, and I'm beginning to hate C&D with a fury. Ah well, I committed to only playing it, so.. here's some map opinions! concerning C&D, of course.
Amber Station- It feels like it should be the most balanced map, being sufficiently close-quarters but having lots of verticality to it. Some chokepoints are brutal, though. Second-least played, I'd really like to go at it more.
Red Fortress- God, I love and hate this map. That fort seems nigh-impenetrable on the ramparts, and the lower levels become a mess pretty quickly once you're spotted. The outlying areas are great, though. Except the variant where you can end the match as an attacker in literally a minute or so by running through the underground passage, grabbing the disc, and back down the passage. That's some grade-A bullshit.
Black Site- If people make it inside the base, it can get pretty crazy. Otherwise I find it's the map for defenders to go ham and not guard the discs to go headhunt. Lots of good ways to enter the base, though.
Jade Forest- Maaaann, this map is evil. It's the only one out of all these maps where I think there's proper spacing, because more often than not defenders get some good views of the entire map, so attackers actually have to get their crap together. I've played this one the least, though.
Gray Rampart- It's easy to just camp the discs and have the place on lockdown but otherwise I find this map the one where attackers gain the most ground. I like the drop points in this one, even if you have people on top of the points it's still possible to get the drop on them.