I'm looking forward to the rotation. I'm so sick of Lackeys in particular, but also annoying stuff like Convincing Infiltrator, Wrenchcalibur and Risky Skipper. For stuff that I'm gonna miss tho, there's Pure Paladin (unless they print more support, which they might), Quests, Highlander decks and most of Descent of Dragons.
I will miss Untapped Potential, but I am definitely ready to see a switch. I'll also be sad to see my golden Zayle, Shadow Cloak rotate, as it was fun to play golden decks for a bit longer after Wizzbang left us.
Convincing Infiltrator I'm certainly not going to miss, nor will I miss any of the Galakrond's and Togwaggle's Scheme.