All true, but there remains the problem of a symbol that's already assigned to Bitcoin; BTC. The dollar, USD uses $ for each and every amount. It wouldn't make much sense to have two symbols for Bitcoin; the already famous BTC and another one for "Finney." Each price now and in the future is written in BTC. Do you want to change this?
BTW A cent is in fact a dollarcent; for me a cent is a Eurocent.
No need to add symbols. We already have the metric prefix from the International System of Units.
Name
Prefix
Factor | deciBTC
dBTC
10−1 | centiBTC
cBTC
10−2 | milliBTC
mBTC
10−3 | microBTC
μBTC
10−6 | satoshi
??
10−8 |
We only need a new symbol for satoshis.