Changing to mbtc is a horrible idea especially on exchanges, Bitcoin needs to maintain this premium feel with a high dollar price tag in btc to lead the charge not dilute it's image with mbtc it'll end up looking more like dev coin (that's no offence to Devcoin)
If someone new wants in to btc then they'll need to see plainly the value whether thats 1btc=$1000 1btc=10,000 1btc=100,000 lets not start being embarrassed by Bitcoin's price.
The thing is, people think "oh wow... 1,000 dollras for an imaginary count... you're kidding". Or they'll think "yup, missed the boat, at 1,000 dollars, it'll NEVER GO higher for something that 21 million of exist". But at say 1mBTC per dollar, or 1,000 uBTC per dollar, people won't feed bad about putting some money into it.
I do understand but I would be extremely cautious about adopting this mind set, bitcoins fought hard to attain this price and no need to start trying to appease Future buyers by giving the illusion that supply has increased and price has fallen ......... Work hard to buy a Rolex, see the value and craftsmanship ... Are you happy with one or would it take ten watches to be happy
No sir ......... When people hear about the bitcoin price there's a certain look, stance and sound thats required from them so they know their dealing with a heavy weight it goes as follows :-
Hands on hips for stability - head slightly raised to the sky - two furled eyebrows with tightly closed eyes, 1 pair of pursed lips and a whistling sound of expelled air -
then you know you've made an impact - mbtc - no thank you.