Frankly I think we should try automating stuff towards our wiki rather than using it as a way to take stuff out. Find ways to integrate this data automatically into parts of the wiki. Bots if you ABSOLUTELY need to. But preferably instead extensions and Lua stuff. Things that provide the data in ways they can be incorporated into wiki pages. Keep wiki pages up to date. Show full UIs, etc... on special pages and dedicated namespaces. And ideally, be integrated right into the search.
I agree 100%. It would be cool if we had a bot auto-update part of those page (While still allowing users to add info and tips). Maybe even some sort of parser function to retrieve documentation...
Both Manual:Hooks/foo and all the $wgFoo pages can definitely benefit from some automation. (Even cooler, would be if we could have something like Special:Documentation/Linker::link (Before anyone balks, :: is allowed in special page subpage name), which retrieved the info from doxygen for that page, as an alternative way to view the docs).
--bawolff