I've always felt the Mars Crater is stuck in limbo between X-Metal/Black and Leather/Gold. They designed the Leather frame to have holes in it to allow the leather to be stitched and glued to the frame, but did they then looked at it and say 'we can just sell it without the leather'? It feels like they just used the spare orbitals of the Mars Leather to cobble together a 'different' frame. If you have the Leather and the X-Metal Black, do you see much need to also have a Crater? I wouldn't feel it is warranted. Conversely, if you can't afford the Leather, do you feel the Crater is a nice compromise?