I think it's about time the irowiki homepage (main page) and navigational bar on the left is updated. Both are locked from what I can tell and a regular user does not have access to update them.
The sidebar is accessed here --> http://irowiki.org/wiki/MediaWiki:Sidebar
My point of view is that for a new player, it is better to have fewer links in there, and only offer the most important information. For older players, that's also better because they can access just the most commonly used pages from there. By putting less used pages as links from within the more common pages, the wiki can be much better structured.
Here are some initial general suggestions I had:
1) Within "Basics", most are okay, but "F2p", "PK Servers" are probably very rarely accessed should probably just be a page linked from within some other page like "servers".
2) Within "Minigames", I heard that Al de Baran Turbo Track and Izlude Arena don't even exist anymore.
3) Some categories have page that really should not be listed within the homepage at all, like "Poring War", "Mail", "Cooking". No offense to the people who love Poring War! Whereas some very commonly used newer items aren't even listed at all, like Mora and Malangdo enchants.
4) I would change the ordering of the categories a bit, listing the more important ones at the top.
There are a lot of changes I would like to make to this, if I had access to it. I've made a lot of changes to irowiki recently (my name on there is maromi333)
I also do want to make some structural changes, like creating a general "Enchants" / "Enchantment" page, which details what Fighting Spirit / Spell enchants are, and then links to the mora / malangdo / FAW etc. pages. Also I want to make a general "Equipment" page too. I can work on these when I have time.