Roger Osborne has posted a great article with a Windows Server 2012 Hyper-V best practices checklist.

I especially like the fact that it’s not just a checklist, but it also explains what it does and why it is considered a best practice to do it this way (in specific situations).

Additionally you might also want to take a look at “Top 20 Hyper-V Performance Metrics You Should Care About” and System Center Advisor.