I was wondering if the thought about doing a general set of drawings (front, rear, top, bottom and sides) and measurements for some of the most common (and others to follow of coarse) like the Tiger, Panther, Sherman (and so on) and then give measurements for the specific scale? I thought this might help some people who would like to try to build a tank (combat or not) that may have trouble with the basics of making tank plans.
from there, maybe some drawings as to how some of the road wheels are put together (and what they used).
Basically, make this "Tank" group a bit more friendlier (not like it can get much friendly that creating a Tank Dating Game) and aid in some assistance in getting one started.
Kinda like a Chilton's manual of the basic tank bodies, only they drawings would be accessible to anyone how would like to try their hand at building one.