I disagree with Dave here.
If people want Wikipedia with a reputation gatekeeper, they should fork the existing content and start building a separate encyclopedia with all the checks and controls they like. Then we can actually compare the two approaches. Does the expertise outweigh the ease of updating?
Of course, maybe this is a way to disrupt the centralized Wikipedia. If you care about a page and want to become its editor, why not keep a local copy under your control, which you keep synced with the good changes that are made to the original.
Maybe something could be done with SisterSites so that people looking at an uncontrolled page could automatically get a link to moderated versions kept by off-site gatekeepers.