Yeah, some good good stuff and some I don't yet understand. Comments below:
Embedded twinning - THANK YOU - it was way to expensive to do before
Network time protocol client and daylight savings support - Wow, couldn't have done this sooner? <BEST OF THEM ALL TO ME!!>
As I haven't done an Ops man install yet I'm not sure of some of the advantages of the other features. For small installs (couple of sites) the Opsless resilience looks nice.
I do have to say touching all your phone systems twice a year for time changes has been painful and I LOVE the NTP client.
The RAM requirement is something to watch closely - all old style MX and some LX controllers will require you to replace the controller so that kinda blows, but the feature set looks worth it.
-Chak