The hardfork is another matter altogether. But price volatility including extreme volatility is a fact of life in cryptocurrencies. If the peg mechanism can't deal with it, then it just doesn't work very well, and considering improvements is reasonable. By contrast, BitUSD (Bitshares pegged USD) recently had a 10x increase in supply (along with almost a 10x increase in BTS price) in a very short time and held the peg reasonably well. So differences in the mechanism do matter.