One omission from your article worth noting...
Liked the article, but there's one MAJOR reason you'd want to consider making the jump to 2014 even if you recently upgraded to 2012: The Standard Edition of SQL Server has raised the max memory limit from 64 to 128GB; that's a huge win for smaller shops or people who don't want to pony up for Enterprise Edition. Granted, you miss out on pretty much every other new feature Microsoft has put out with 2014 but you could easily grease all your instances with more RAM and get some nice performance hikes just from that alone.
Biting the hand that feeds IT
