Yes this exactly what I was getting at. Since NBT is perfect for trading on decentralized exchanges, we could create a decentralized exchange with low fees that, because of the low fees, could compete with other exchanges and bring great liquidity for both peercoins (centralized exchange minting) and NuShares (what I wrote about above). That way we could solve two issues at one stroke.
People could be holding NBT on this exchange without volatility risk, which is kind of the only point (for me at least) to hold USD at a centralized exchange (and I keep that position small, thinking that they will gox me at anytime).