This way you don't have to abort or pause a big copying action, if you later decide you need to copy/move more and would like to make a queue. (having 2 copying processes running at the same time is very inefficient and slow.)
The behaviour of the F2/Queue window would have to be changed slightly to behave more like the normal copying window, so it should not go to the background automatically, but only when the 'Background' button is pressed (like in the normal copying window). Also the F2/Queue should include the new progress info (13/230 files, 8/45 Mb).
I think it would make the program less complex (now we have 2 different forms of the same action (copying/moving).
Also I think both the F2/Queue and the normal copying window have their strong points, but both miss some functionality of the other. By combining them, they would only have strong points and nothing missing!
Also now a normal copying window which has been pushed to the background, cannot be brought back, while the F2/Queue window can do that, so that would be an improvement also.
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