We already have a pretty good currency exchange just for SBD and Steem at the moment.

As steem begins to grow and draw in more users it would be pretty cool to see if we had a market trading many cryptos right here on steem with wallets that can take any currency.

One day we will have a platform with millions of users and steemit will be many peoples first stepping stones into the crypto world so it would definitely be easier if we had everything integrated into the steem blockchain.

We may have a day when we have SBTC @kevinwong! :)