Outlands doesn't need to be updated imo. I'm fine with it as it is and houses plenty of great memories. I also don't understand why people have a problem with Outland questing. For me, when I finally get out of Eastern Kingdoms/Kalimdor, I'm so happy to move on with Outlands. But then because the experience is gained so extremely fast I rarely stay in Outlands longer than a day so I annoy the shit out of myself for having to do WotLK and Cata.
Personally they shouldn't have remodeled the old content to begin with, but that's me. I miss how the old design used to be. I always used to quest in Ashenvale because it was such an awesome and big zone. Ever since the remodel I have never been there and I wouldn't really know how it looks just so I can preserve my old memories of it.