Very true, we don't need everything to be pegged to a single currency. Another development that will make moving between crypto-currencies more fluid will be decentralized exchanges.

I believe that apart from Counterparty and ColoredCoins, Ethereum may also be able to run as a decentralized exchange in fact helping Bitcoin and the other Alternative coins.

I assumed a long time ago that eventually many of these coins will somehow tie into each other in the process of building the future foundations of a new decentralised internet. I think that time is coming.