Finally downloaded TreeCalcs, did some quick number crunching, and it is interesting.
So for me, sitting around in my 10-man t10 gear here's my old numbers:
Versus my new numbers
The biggest thing that's not on there is the Time to OOM. Before I was a sitting at about 7.5 minutes in my throughput set, with a net Mp5 of -420ish in a RJx5+WG rotation. Now in the default of 'roll a LB stack, RJ, and WG on cooldown' I'm at net Mp5 of +26. Meaning I shouldn't run out of mana if I stick to the rotation.
I'm going to tinker some more to make sure I didn't make any mistakes, but that's just fascinating to me. In the meantime I'm feeling a lot more powerful.
Also mastery is looking to be quite good as a stat. Plus, if I can really spam RJ constantly, I won't have to worry about the other points in revitalize, since I'll likely be keeping it pretty near on CD.
I see why they did away with the 30% buff now.