I always had the idea that we could have a tiddly wiki that could be edited on line interactively and on saving updated any changed tiddlers into a Gut hub repository as separate tiddlers like
tiddlywiki.com and those without permissions could submit a pull request that owner could respond to as an update to an existing tiddler (As Tiddlywiki.com does). Then a designer could build a plugin/macro and others can recomend changes, and it all lives in one repository, that everyone can see the published version, and the owner can instantly update within tiddlywiki.