And I think that is why they did it, just to make the transition from LS1 or E40 to the E38/E67 easier or at least more familiar. I suspect they stopped doing those custom OS's when they realised the scale of what needed to be done to keep on top of all the OS's out there. With over 100 OS's between the E38 and E67 alone I would imagine what they do with the 'real VE' mod would be quite a task and probably wasn't viable to continue when they stopped charging for the COS (at least I heard they did).