As of last week, I am the new owner of this wiki. While I have already made significant progress (mainly cleanup), there is still more to be done.
-Song pages. Almost all of the song pages are yet to be made. {{Template:SongPage}} can be used via the Source Editor when creating a song page to help this process along.
-I should figure out how to correctly add user-made templates to the list of templates available in the Visual Editor so as to make going into the Source Editor unnecessary.
-Song lists for many installments of the series need to be filled in.
-For that matter, avatar and title/achievement lists also need to be filled, along with event histories.
-Navigator pages, or at least a page for Seine.
-There may be some other things I am forgetting.