The icon could be used as part of a template to refer to items in other pages, perhaps?
e.g. make a template such that in some other page, say on the page for Leaping Lizzy talking about Bounding Boots, you refer to the item as {{item|Bounding Boots}} and it will automatically present it like:
http://images.somepage.com/ffxi/icons/15351.jpgBounding Bootshttp://wiki.bluegartr.com/images/4/4d/Rare-Icon.gifhttp://wiki.bluegartr.com/images/2/2a/Ex-Icon.gif
or whatever formatting looks nice in the wiki.
Additionally, that template could be made to (if wiki lets you) do a little overlay window on mouseover that'll show the condensed stats, like the new Linkshell Community feature, and the way WoW does it.
On the other pages, all you'd need to do is {{item|Bounding Boots}} and it'll insert all that for you.