As I understand from reading the whitepaper, the idea is that a subcurrency developer will likely make some kind of currency exchange on top of ethereum to exchange ether for some other cryptocurrency, like BTC, that could, in turn, be exchanged for real USD. Is that correct?
And it is also possible that a more direct currency exchange b/t ether and USD could also be created on top of ethereum, right?
Do the developers of ethereum, the company, plan on making some sort of ether -> BTC reference implementation (i.e. a real, useable contract) not as a feature but as an example of using the Ethereum platform?