I think if we re-denominate to mBTC, then the media sources will use the market cap rather than the exchange rate. The current market cap is around $11.66 billion. In future, media will report like "BTC breaks $25 billion market cap" and such.
So there is no problem with media publicity.
I disagree. The media likes price charts, especially the damn Gox chart. I'd rather they use Bitstamp or, even better, an average across exchanges. But they won't change that, and they certainly won't change to market cap reporting for our convenience. Switching to mBTC would totally confuse the layperson, they'd be like "Bitcoin was $1000 and now it's $1? It's crashed omg!"