This may probably have to be split into several enhancement requests. Here is the idea:
In the Wikipedia of Ripuarian languages, we have several special pages which inter-language-link to the corresponding special pages of all other Wikipedias, e.g. [[Special:Statistics]], et al.
Maintaining these links in [[MediaWiki:xxx]] pages, is such boring and tedious a task, that it would have to be left to a bot.
- having a means available, that would loop through all wikipedias using the data already present in [[special:sitematrix]] would require nothing but a one-time setup.
- as Wikipedias, and other project wikis, are set up, and sometimes closed, or renamed, it would be nice at times, to use constructs similar to:
This is a suggestion to think about. Proper caching would certainly be an issue.