I fully support this (it's what I suggested over a year ago), but what it comes down to is BitPay, Coinbase, Blockchain and Bitstamp getting together, agreeing what they're going to use, and doing a little joint customer education campaign around it. If there's community momentum around "bits", great.
My only addition is that I think we should all stop trying to attach SI prefixes to the currency unit. Name me another world currency that uses SI prefixes. No one quotes amounts as 63 k$ or 3 M$. The accepted standard at least in the US is <currency-symbol><amount><modifier>, i.e. $63k or $3M. That may not be accepted form everywhere, but in any case it's an informal format, not a formal one. The important point is there should be one base unit that is not modified with SI prefixes. And I think the arguments are strong for that unit being = 100 satoshi.