This is exactly what we need at exactly the right time. If people can cash out into fiat as well then our market cap can challenge Bitcoin.
Value in Value out. If you can get your value into the ecosystem and get out out then that is all you really need. Bitcoin is focused more on getting value out than in and as a result it's easier for people to spend Bitcoins than to acquire them.
But in our case merchants don't have any reason not to hold BitUSD if the peg holds. Our market cap can quickly reach the billions and surpass Bitcion if BitUSD is adopted by companies like Dell and Overstock.
I think the answer is Ripple Gateways. We need to form a strategic alliance with as many Ripple Gateways as we can so that when our market cap does reach into the billions of dollars we can actually exit gracefully. BitUSD should purchase USD. BitGLD should purchase Gold. BitSLV should purchase Silver. BitBTC should purchase Bitcoin.
We should make it as simple and as seamless as possible in the interface. Figure out how to connect it to CIrcle, Ripple, the Gateways, etc.