Hmmm, from my understanding though for the volume that you'd end up selling plastic wouldn't really be a viable medium unless they brought out some kind of modular thing like the platformer kits, hence the predominance of resin in the scenery market, and I severly doubt if Mongoose wants to be worrying about yet another casting method at this stage. Thats why I've had to vote no.
Far better and easier would be to offer some downloadable printout encamptments and gun emplacements, kind of like the onces you can get of the Yahoo SST group.