Slight problem: I've downloaded 398 images so far, and it takes 92 MB. I don't know the exact number yet, but it looks like there are about 800k images in total. So give or take 200 GB 
Maybe you can compress them or convert to other image type to reduce size and still keep the same look like of original images.I like the idea of replacing images if possible, or forum will soon look like ''war'' zone
Can you, @LoyceV or @tryninja or anyone program a script that allow each user to download all the images of each posts on a directory? So that thoseximages are not lost and can be later re-uploaded?
Or even better than substituting the Imgur hosting with Tlkimg editing the BBC code every time it parses an [img] command?
We must avoid the “war zone” scenario at all ccosts!