As Heli noted in the comments, Yawning has posted an alpha version of Mew that supports the changes in 4.0.6. I decided to do some stat modeling, and came up with some interesting results. (WARNING: Alpha version of simulation program based on subject-to-change data with off-the-cuff profiles used to generate analysis. I’m certain it’s reliable.)
RSV’s by Item Level, 4.0.6 PTR (to .05 error)
Current Live Data for reference: (ilvl 359)
Analysis: Essentially, my initial thoughts were correct. Mastery is coming down and Haste is coming up, but not enough to significantly affect current priorities: either haste/mastery or crit/mastery is fine for most. Cats pushing into heroic-mode content (and 372 gear) will want to go haste/mastery. Also, with mastery’s drop in value, the dps loss for prioritizing hit is not as severe.
More to come once I play with Mew a bit more; I’ll be relooking glyphs, trinkets, socket bonuses, and the new logic to use FC->Ravage on cooldown.