The devs seem to be interested in seeing the theorycrafters get busy on the Mists of Pandaria numbers:
I know that's not easy to look at right now on beta, but it will get easier once A) raids are open, B) we enable mods again, C) more theorycrafters conclude that we aren't fiddling with numbers so much so that their time isn't being wasted. (We aren't fiddling with numbers nearly so much, so maybe that will encourage some theorycrafters). (source)
SimulationCraft isn't ready to go yet (the Mage module is currently entirely disabled), so we're kind of stuck in the napkin math stages, but I figured we might as well toss the old ball around and see what we can come up with. And so I'm throwing open the comments thread for discussion. I believe the TheoryCraft-o-Matic Lite is in pretty good shape as far as estimating the average damage of a spell given spell power, crit rate, mastery and haste. (Combustion is a pretty wild guess, and there may be bugs, so please feel free to point out errors if you spot them.) So I figure by working with those numbers and mathing out some potential rotations, we can come up with some preliminary numbers, at least.
First order of business: what are some reasonable level 90 stat values to work with?