So stop dreaming of BTCs and join the show using mBTCs. Believe me, it will be more than enough too.
No thanks. Even if I screwed up and didn't buy any bitcoins when I found out about them a couple years ago, they'll always be BTC to me.
We've been using the BTC denomination for so long now; it's what people recognize. Changing to mBTC or Bits or anything like that will just confuse people even more. Start pushing mBTC now and people will think it's an altcoin...