I like the concept, but not having a Filco, I'm worried about compatibility-- would I end up with a G80-3000 with a few off keys mocking me (like I have now, having swapped doubleshots from an 8100 series POS board?
If we're looking at retro look, can we do cup keys? I seem to recall signature had a line of 'em.
Thoughts on OS-independent meta keys: A diamond (like a Sun board, I and II (for menu and right-click), or how about a circle with an X over it-- it subliminally echoes the Windows logo, but isn't. ⦻