The disadvantage of that method is:
Bas vb, 21/06/2012 19:59:Such a tool exists already, it's cat-a-lot with a (temporary) sub- or parent category. You said it shouldn't involve saving on Commons, but I don't think transparency here is a problem: rather, given the number of images and the high chances of mistakes, it could be an asset; more likely, nobody will bother to follow closely.
Last year I scrolled to the categories (looking 200 pictures in 10
seconds), every picture that I liked or jumped out was then opened in a
new tab by me, and if I liked the picture I copied the link and added it
to a page with wikistyle pictures on big size (700px) this page I
watched in preview edit mode and this way narrowed down the selection.
I think a basic but strong to tool to speed this up very much is to skip
the copy the link and place it somewhere else part of that and make that
a simple mouseclick.
Nemo
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