Not sure if this is the place for this (apologies if not) but as a teacher setting crosswords for revision purposes what would be good would be
a way of setting a default puz file (perhaps stored along with the html file that would be loaded so bypassing the menu screen (the menu could be loaded if the file isn't present), or
an alternative menu page from which different user generated puzzles could be loaded (drag and drop works really well but an option for loading files stored somewhere other than on the local computer would be good)
a way of disabling the memory — this is an issue on shared computers with different users.
Not sure if this is the place for this (apologies if not) but as a teacher setting crosswords for revision purposes what would be good would be