I leveled up from 85 - 90 as Frost, so I guess I'm used to the rotation. While I'm glad to be back as Frost raiding, I do feel like I'm missing Fire a bit. I'm skeptical on Arcane's lead, perhaps this is true in Terrace for everything but Tsulong. HoF has so much movement or AoE fights, I can't see Arcane leading the pack there, but heck I'm more than happy to be proven wrong.
I haven't liked Arcane in last couple of xpacs so I hope it isn't true. ha!