People have been wanting this for awhile.  But in my honest opinion, it didn't make sense before because the value and the network stability/security wasn't there.  But now people are realizing that this coin is not just a joke, and really does offer something unique and have value and the potential for more value.  So now it does make sense to add SXC to the BTC market.  In fact that's one of the necessary next steps to help take the coin to the next level to reach its full potential.