I have a major complaint about ISOSel: I go to great lengths to keep my ISO's organized. This includes appropriately naming the ISO files accordingly in a unified standard as well as keeping them in a systemized folder structure. When ISOSel lists them all alphabetically.. its counter intuitive in my opinion. I blivet that it is a great option and may be something that will appeal to some users. I do not think it should not be removed, but be left as a configurable option.
However, I DO think that the user should also have the option to browse ISOSel in a manner reflecting the same directory structure as on the ISO Stick either via a "Folder" view (think Windows Explorer) or a "Tree" view (think Windows Registry Editor).
Again, just my $0.02. All in all, ISOStick rocks, if not a bit rough around the edges.