... is it perhaps now the time to
issue a challenge to come up with a complete
transceiver design
fabricated to the size of a postage stamp?

If car manufacturers had miniaturized their products in the same eay
electronics has shrunk, then the modern motor car would fit ont he head of a
pin. The only problem is who would drive it? The knobs and pushy-things
would be too small to get hold of, or have you a solution for that, such as
a big remote control?