User blog comment:Rappy 4187/Technical Update: May 13, 2015/@comment-24473195-20150514125229/@comment-452-20150515023955

I really like that "Wiki Health rating" idea - much more informative than a "WAM score".

And I also really like the concept of encouraging fixing current known issues instead of constantly adding new features articles. However, actually preventing new page creation probably is a step too extreme.

There's always the option of adding a notice to Mediawiki:newarticletext to advise editing existing articles and fixing known problems with links to the relevant special pages. Not quite as cool as an automatic message when the wiki is "unhealthy", but it might work.