In the pipeline:Migrating to the new shiny Mac Pros along with OS X Server
Reasons: Thunderbolt 2 connectivity is amazing and works fine to connect FibreChannel RAIDs. OS X Server: Though it's correct that the GUI got simplified a bit, it's the same server package and complex as it always has been, however easy enough to support. And if configured correctly, a solid workhorse for many scenarios: network accounts for lab use, calendar and contacts server, along with some helper tools it works in heterogene environments fine, supports huge amounts of users in via LDAP..just to name some reasons. for 20 bucks the best server os to support Mac and iOS clients. And because the underlying foundation is UNIX, it's friendly with any networking stuff such as RADIUS for your WP2-Enterprise wi-fi needs..just to name a view.
One thing that is not quite right in the post above: SAN support exists via XSAN.