I have been on several wikia and wikis by now and have seen an assortment of pages that present their material nicely. On the Heroes Wiki (note this is a separate wiki from Wikia located at http://heroeswiki.com), I noticed that they use a successful portal system within their wiki that works in conjunction with their categories but creates image boxes that link to the articles. Granted they are only working with 2000 articles, and we now have 54000 articles. Would something like this be feasible or worth our time? I have been testing it out on my Futurepedia with varying degrees of success, only I have less material to work with there.
Here are some links to Portal pages of the Heroes Wiki and from Futurepedia to give an idea.