Evan Prodromou wrote in part:
You don't need to view diffs to modify the source files.
Not at all. Losing the diffs just means losing one nice feature of the Recentchanges avaiable with most wiki software (including MediaWiki).
Diffing images is kinda hard. For vector image formats it's a little easier, and for stuff like SVG it might actually be practical, but for most purposes it's _extremely_ difficult to automatically detect the "difference" between two images. I doubt it would be worth the effort.
I was hoping that for SVG it would be practical and even useful, and if one is using SVG images, then maybe svgwiki already does this. But for PNGs and JPEGs? Ha! No, not worth the effort.
-- Toby