I think the point is to start shipping mediawiki with
common extensions
there.
This is great if we are going to version the extensions with the
version of MediaWiki shipped, and backport changes to those extensions
to ensure they get security and bug fixes like core does.
Alternatively, we could provide a way for extensions to be easily
upgraded to compatible versions, similar to wordpress and other sane
applications.
If we don't plan on doing one of two things, then we are forcing our
users into the crapshoot that is finding the correct extension
version, or possibly running insecure or buggy extensions.
Respectfully,
Ryan Lane