This is somewhat old news, but since no-one else posted this, I'll fill the huge void. Gamehelper recently posted an interview with everyones favorite mapper DaveJ. Dave tells us about his past not-official cs maps, his mapping methods and his newest project ETC2 amongst other things.
EDIT:
DustToo
GH:How come we haven’t seen any PA (prepared assault) maps released with CS? Did the CS team ever give you feed back on that scenario?Read it or be less informed about stuff..
Dave:It was more a ‘fun’ scenario than anything else. I did give Cliffe a look, but the focus at that time was primarily on the ‘new’ escape and assassination scenarios. PA goes against some basics of CS (such as ridding the need for money) and thus would not be very suitable as an official mission-type.
EDIT:
DustToo