As a fellow designer who spends a lot of designing these guidelines, I've thought about how to include these but it does hurt the idea of making it automated.

As a fellow designer who spends a lot of designing these guidelines, I've thought about how to include these but it does hurt the idea of making it automated. If this proposal is to remain in it's simplest form, it would require the default logo selected to be one that is as flexible as possible and would require the design to possibly build in the space required, background color, etc. There may also be room for additional tags that would describe the usage i.e. rel="logo grayscale" or rel="grayscale knockout"