I rarely see any well thought out, cohesive arguments for re-structuring wikipedia. I see no reason for an internet encyclopedia to copy the shortcomings of a paper encyclopedia as closely as wikipedia does.
Paper and shelf space are expensive and limited, you have to limit the articles and the article size.
On the other hand, HD space is cheap and text small and easily greatly compressed.
Searching in paper is hard. Searching on a computer is easy. There's no reason to have one article be THE article. Articles could be write only, unmodifiable, and search-able by their contents, their ranking by the general public, their ranking by a group of experts, their ranking of any selected group, by the hash of their text, etc.
There could be some built in redundancy, like a short encyclopedia style article on top of an incredibly deep Ph.D level dissertation article.
In short, I find wikipedia cludgy and inexplicably mimicking the short comings of paper.