suggestion: function to number images in a different order

[GIDDATRATIYO]

For example, there are many cg galleries where uploaders put no text images before text images and it's very inconvenient if you want to read the story without spoiling yourself; or galleries where cover is in the very end for some reason, but I want it to be ordered as the first one in the downloaded gallery. Of course I can reorder them all manually but that can be quite annoying, that's why I thought to propose you this thing:
Simply number the downloaded images in the order listed in the "pages range" field:
if my queue is "50-100,1-49" the script will number images 50-100 with numbers 1 to 50 and continue numbering the rest from number 51;
if it's something simple like "2,1" it will name image 2 as №1 and image 1 as №2.
Of course the download sequence would have to probably follow the custom image order too for this to work.
I hope you get the idea and consider implementing this feature, Broccoli. Good day.