Taking a trip to Special:UncategorizedPages one will find that about half of this wiki's pages (which is perhaps more than half of the content) are uncategorized. I have attempted to clean out immediately categorizable pages. Most of them are however related to this or that conlang. Knowing that not all conlangers want to have their pages explicitely listed anywhere before they're in a vaigly presentable state (including myself!) I've left these alone for now.
Seeing however that quite a few (for example Dalcurian, Khangaþyagon or Senjecan) are among the more complete works on this wiki, I wonder if we could just go on with them, or at least ask. Or indeed, is everything about them uncategorized, or are some basic pages categorized? Should check that too.
Another large block is the conlang relay subpages; I'm sure nobody would mind categorizing those, but do we need to? The main pages for each can be found quite well. So on one hand, unnecessary work; on the other, they really stick out in the list. :ʃ
The likes of Europic and Uralo-Siberian languages are probably common-interest enuff that we don't have to worry about page "ownership", but should they go as reconstructed languages, language families or what??