* Front page needs some work. 'Exploration' should probably be renamed 'The Clockworks'. I'm not sure 'Billing FAQ' actually needs to be under 'Getting Started', nor the TOS. Community Standards is fine, as it's supposed to be a plain-english thing anyway. In general the whole 'Getting Started' block needs to be reorganised; that's a section that someone might go through, once, and then will want to go to specific information pages in the future. As it is now, it takes up a lot of real estate on the page, not balanced by anything else.
* Need images and definitions for each of the gate totem icons. Totem information should probably be also in a general "gate" or "dungeon" article and not in "gate creation"
* Need a section dedicated to the current arcade layout. Which gates are active, which are dormant, the totems. Keeping the dormants updated with mineral totals would be crazy, but maybe those should be updated once a day or so.
I'm pretty sure I had some other thoughts but I'll have to wait til the 1st to remember what they were. ;p
So.. is this an official wiki, or just a sanctioned playspace? If it is official it is in pretty bad shape; there are way too many missing images and "we don't know how this works" comments. Wikis like this are best used as easy-to-keep-updated game documentation/manuals, which also serve as handy advertising to show off different aspects of a game. Should try and get this sorted before the 4th launch.
It's mostly volunteer player edited. If you're interested in the to do list, you can find it at http://wiki.spiralknights.com/User:Equinox/to_do (mentioned in the looking for something to do sticky at the top of the forum). I'll be working on the main page this week.
The basic totem images can be added to the gate page. They were included on the gate construction article for a bit, but the mechanic for it changed recently and no player testing of how it has worked has happened in a conclusive way.
I don't think it's realistic to copy the arcade on the wiki. That's really something players should go in game to look at.
Due to the amount of changes with the constant updates during the preview, the wiki actually has done quite well and the volunteer editors have worked very hard to do some very good things. You may feel free to jump in and contribute edits.