I am using NeatWorks v4 sp3.
When I scan documents, frequently the documents feed through the scanner at a slight angle. The resulting image is slightly skewed and has black borders. (Although this is the first sheetfeed scanner I have used, I assume that this issue would be common to all sheetfeed scanners regardless of brand.)
A nice software enhancement feature would be to automatically align the image based on a straight more-or-less vertical edge and then re-autocrop the image to get rid of the black border. (This function would operate transparently (to the user) much like the existing auto-crop functionality, except this feature should probably be configurable (Tools/Personalize) so that it could be turned off if a user was scanning "ragged edged" documents.) [Google's Picasa 3 is example of a program that allows small-angle image adjustments.]
I hope this idea is helpful.