Lots of things need to be updated, especially new content from 3.0 and 3.1.
Version history should be added to many articles, along with Gallery content showing differences between versions
I suspect that the statistics for most weapons are outdated, need to figure that out
Possibly create a wiki page for each update, detailing the major changes given in that update (separate from the changelog which contains all updates but is more technical)
Need better pages for weapons, survivors, removed maps (e.g. Industry), planned maps (e.g. OceanFloor, RedRock), etc.
Is the "Strategy" section on the map pages really necessary? Also, the "Objective" section probably doesn't need to exist on the Survival map pages.
Need to remove references to Contagion other than those that are directly associated with ZPS. For example, a page related to the survivor "Tony" has nothing to do with ZPS. A piece of trivia on Marcus' page that says he also appears in Contagion is fine.
Is there any way to improve the search function? Probably not.
Need better soundtrack pages. Maybe just one article for the entire soundtrack?
The page for Zombie Panic! 1 needs to be fixed, it sucks
Need to remove pages like "Swamp/Water Maps Category", too specific and not helpful
Possibly add a page similar to the Changelog page for more general developer communication like teasers, contests, etc.