Maybe one for a future release if not too cumbersome to implement: I really like the File List tab of the FIT Viewer. Would it be possible, perhaps without having to preview the images, for the Viewer to be able to open a list of files? Not just one by one?
With the File List tab I would then be able to compare files in a group - say all my L frames. To keep an eye on seeing conditions, background levels, etc.