Commons (at least) needs an additional search mode: "image search". (Maybe
Special:Imagesearch.) Image search mode should only search pages in the Image:
namespace and should display the results in a gallery a la [[special:Newimages]].
Special:Newimages only searches image names (and works like a regular expression - searching for 'foo' returns results like 'food'). This is very useful and I
suggest we extend on it by allowing the user to search the image name and/or
image description (default both). It returns results in reverse chronological
order of upload time. This is somewhat useful and it would be nice to keep this
functionality, and also offer the option of ranking by relevance (the normal
default for search).
Commons in particular would probably like either 1) to make the search box in
the menu be an Imagesearch, or 2) to have two search boxes in the menu, one for
Imagesearch, one for (normal, text) search.