I'm not sure about exact numbers on MoP (havent been on beta for about 2 months) but imo MM need at least 2 things now:
a) 3 min readiness (MM only) and
b) 'fixed' MMM - with all focus changes 5stacks is just too much (i would love to see it at 3 stacks or even better - 3 stacks = free instant aimed (100%dmg), 4stacks = free instant aimed (~130-150%dmg) and 5 stacks = free instant aimed (~160-200%dmg))
[c) more than base 3% heal on chimera would be nice]