I have no problem using the mBTC and µBTC, but as I have seen more and more having problem with these SI prefixes, it makes me start feeling the suggestion of using "bits" does make sense.
How is memorizing what a "bit" is easier than memorizing what a mBTC is?
Because the majority of people in the world are already used to using 1 "dollar" = 100 "cent", 1 "pound" = 100 "penny", 1 "peso" = 100 "centavo", 1 "rupee" = 100 "paise", etc, in dealing with their own local fiat currencies. That should help them easier to get used to 1 "bit" = 100 "satoshi".