I have large disk drives (mirrored). Would be nice to have upper portion of defraggler provide scroll bars so one can scroll through the defrag "squares" to see what is going on. Even dragging the bar down doesn't show all the blocks that are being defrag'd.

That sounds neat, or at least a window showing a preview of the files & folders being moved, maybe show the next ones in highlighted that it is thinking of moving right after it moves those!