Hey JRWR, last time we spoke about the LocalSettings and extensions I remember you said that you'd prefer to do any addition to the file. I'd like to add these extensions, and I'm happy to do it if you don't have the time:
http://www.mediawiki.org/wiki/Extension:Subpage_Fun
http://www.mediawiki.org/wiki/Extension:Arrays
Thread:User talk:Andytizer/Langbar template: ideas and extension requests