Ret is a mess right now. Mine is doing 2-3k less DPS than it used to, but they said they have to do a numbers pass, and there's no glyphs active atm. Holy power is a fun mechanic, though they need a better way to keep track of it, "power-aura" style. Because right now sometimes things use up HP, sometimes they don't, sometimes you get an extra or full HP proc, etc... It livens up Ret a bit though, which was needed.
My DK is weird right now. People are saying Frost is doing the most DPS, but I did the frost thing with 2H and DW and I'm doing way more DPS as 2H UH, and DW is right there with it, sometimes higher, sometimes lower. Festering Strike is smoking things right now for me for 14k hits (usually around 11k-12k) with only my buffs/debuffs up. Non-crits are ~5/6k.
I still don't like the rune system changes personally, but I guess we're stuck with it.
I hope they clarify this Justice/Hero/Valor points thing up soon. Right now it sounds like you can get a head start on "Dungeon non-set" pieces.