I'll be changing, but that's only because I'm specced Felguard demo for solo work and I'm not too good with that spec in 5-mans. I'll be going Affliction, since my gear ain't so good, and I just don't have enough crit for Destro to be worthwhile yet. Patch 2.3 is just a coincidence, and the nerf doesn't really affect me, since I don't PvP (and thus don't often get Mortal Striked)
On that note, I know that Shadow Embrace isn't supposed to trigger additional effect anymore, right? I've been taking it to mean that it can't trigger things that proc off of spell casts. Will it really not contribute to Soul Siphon anymore?