I propose that in addition to the current categories, we introduce diesel vehicle categories to compliment the diesel engine categories.
In my opinion, VWDiesel.net is not just about diesel power, but the vehicles powered by diesel. With specific Vanagon, Golf, etc sections, questions and comments about the vehicle itself can be addressed, allowing for more efficient searches, among other things and keeping the engine sections less cluttered.
That being said, I'm more than satisfied with the current format and appreciate all the help and information I've gotten from VWDiesel.net.