A Gallery of past successful designs in great detail (CAD files, images, calculations, written explanations...) would probably become one of the most useful tools for FRC design out there. I know how helpful the FIRST Canada galleries (
http://www.firstroboticscanada.org/site/node/96) can be when looking for ideas, and this sounds like an expansion on that idea, so I say go for it.
Otherwise, it might be helpful to incorporate Kit frame based designs onto this page as well. It is a great oppourtunity to play with 6WD and Mecanum designs without going into heavy manufacturing. Giving rookie teams access to things like incorporated supershifter designs, or chain tensioning systems could enhance their on field performance without too much work for them.