Sorry I have not read the thread but... what do have campaign designers to do with coders and 3D, texture artists? I would think campaign design detracts not a single bit to any other effort, when the missions/campaign are dealt with: it keeps busy those who do that for a job and give customers more options, which is the merrier (no comment though on this last P-51 GTA campaign but somebody might like it and nobody's forced to buy it). Probably I am just being naive: please tell me why.
Airplanes are now built to carry a pilot and a dog in the cockpit: the pilot's job is to feed the dog, and the dog's job is to bite the pilot if he touches anything...