Well, with making one large picture, it'd be harder to link the info pages for each pokémon next to it. And that would just be given people could load such a large image, or if we could make one with the names easily readable that wouldn't be some over-1000px in dimensions. My main concern with one large picture is making sure everyone will be able to load it, or that it can be not-as-large and still capable of being read.

I'm honestly not sure how we can really change this either, unless we divide them into common groups. We'll still play around with it, though! If all else, we could switch to purely text lists.