Meh I did a quick forum search and it seems all those things have been discussed back in 2010, and developers mostly agreed it was a bad idea to use bitcoin for anything but digital cash. Satoshi though wasn't against hash-sized arbitrary data in the blockchain.

EDIT: there was even the exact same proposal of DNS on top of the bitcoin blockchain: http://privwiki.dreamhosters.com/wiki/Bitcoin_DNS_System_Proposal
This article even discusses overcoming potential resistance bitcoin developers/community