That's not why stuff gets deleted from wikipedia, the USERS do that, because they have processes and policies which encourage it. That's a much more difficult problem to address, because you can't fix it with technology. Same problem affects a redesign... That said, I have seen some encouraging evidence that the community wants to address the usability of the tools and UI on wikipedia, and the engineers working at the foundation have their own ideas which are a little more realistic, for example:

http://www.mediawiki.org/wiki/Athena