This story in the latest Dirt Rag
is a super interesting read. It's a long one but a good one. IMBA released a press release, somewhat in accordance with this a couple weeks ago. Check it out here
I never thought to much about legally designated "Wilderness" until I moved to CO. There's a ton of great terrain that would be fantastic to ride, but all falls under the Wilderness blanket and we're outlaws in it's regard.