Why symbolize Sat/Satoshi as BTC? This is the same as McDonald's denoted by the letter F or other letter of the alphabet, for example. There will only be confusion from such innovations in the design of the Sat/Satoshi-logo.

The small symbol BTC is not needed at all, and BTC already belongs to bitcoin.

Let everything remain as it is, because it has already been accepted into the BTC-community and used to it.

The only thing that can be corrected is in sat to add 2 dashes above and below the symbol S, as in the dollar sign ($).

Like that:


Since sat also stands for currency, albeit a smaller denomination.