The strange thing about talking about the unholy tree since Cataclysm is that nothing ever seems to change. Don't get me wrong, unholy's been on a roller coaster of nerfs and balances, it's true, but the basic gameplay stays the same -- and more importantly, the basic problems never really get fixed.
So as we come into Mists of Pandaria, where are we with unholy? It still has a relatively unique playstyle, with a pet and less difficulty keeping diseases up (but more difficulty applying them because of the rune spending issue), but this same playstyle gives it a lot of trouble, as weapon damage scales horribly and strength becomes more important -- some would say too important. This is how it continues to go with unholy.
Today, we'll take a look at the upsides and downsides of unholy as it currently exists in the Mists of Pandaria beta and maybe make some suggestions for things Blizzard could focus on fixing once the death knights' turn for class balancing comes around.