If you want to contribute, then join #2238wiki, as written on the main wiki page.
Also, vandalism isn't the only reason for the wiki locking, in fact most of people just do very small edits, like one line for towns, and it's impossible to check everything by then and to see which articles are really done. We are then adding most of the pages to the wiki, so that users only have to add some informations, not to format the page (Updating work and not writing work, if you know what I mean).