I'm just saying if we're making it all up, you can't pretend like lower casing is some kind of well-known convention for currency subunits, when it really isn't. I get the rationalle of it, but it's not convincing.

A b will cause more confusion, because it's unclear what it stands for? "Bits"? "Bats"?

Sats are absolutely not bitcoins (boo BIP-177 👎), and the symbol for it shouldn't even hint that way.

Besides, we have a symbol for sats, and it's an interesting, beautiful, meaningful and unique one. 😍