While searching for a metadata editor, I came across
Semantic Mediawiki. After playing around with it, while it didn't suit my need, I thought it would be perfect for FIRSTwiki. It is a plugin for Mediawiki which can, among other things, be used to define information about something, and then recall it elsewhere in the Wiki, in a table format for instance. It could be used to automatically generate team lists from individual team pages, no manual editing needed.
An upgrade from MediaWiki 1.6.5 to the latest would be needed, and a few lines of changes to the MediaWiki configuration file.
If this is a possibility I could do more playing around, or possibly host a demo.