I won't miss Mists just like I don't miss Cataclysm or Wrath. The only thing I liked about Mists was the PvE (Not dungeons/Scenarios). I hated every single zone, I'm sure some find them beautiful and that's perfectly fine, different opinions and all that. I however felt they were very out of place in terms of the Warcraft Universe and the overall theme was disappointing as well.
I'm looking forward to not having to clear Vermin off some farmers land and water their crops. Valley of the four winds stands out as the worst quest zone ever put into Warcraft in my opinion and I'll be very happy to see the back of it and all of Pandaria.