Dang @dantheman
Good post! You beat me on this. I was going to start a post regarding this same idea. Albeit, not the DNS integration part but, how Steem has majority of the tools to create a decentralized website of sorts, in this blogging system.
I was going to suggest to create a web address the traditional route and just have it forward to the Steem post.
You suggesting to build into Steem a DNS function is step in the right direction IMO.
Steem... hosting blogging and private websites! Awesomeness!