Good news - the Nu code already has the ability to easily add new currencies to the same blockchain. No new NuShares or blockchains necessarily need to be created.
The main thing holding back the development of additional currencies right now is the Nu team’s focus on mastering USD operations first. If an outside group simply created a clone of Nu and called it “X-Euro”, the peg would likely crash very quickly if they didn’t understand our full design (or if they did not have multiple people in place at launch to handle custodial duties and coding). The Nu design is elegant but much trickier to coordinate than simply launching a digital asset like a Bitcoin fork.
The concept of NuEuro and NuYuan has been discussed in a few threads, including this one: Discussion: Adding new products to the Nu network
Development can begin on those new pegged currencies whenever a shareholder motion is passed to do so. I think many of us prefer seeing our core product (NuBits) developed further before we start expanding too quickly. BitShares is learning the hard way that ambitious product line expansion often leads to nothing being completed.