Do you think this would split the existing PAR user base, given that the pros don't matter much to those users (recursive directory blah blah... just create a z

Do you think this would split the existing PAR user base, given that the pros don't matter much to those users (recursive directory blah blah... just create a zip file) and the cons (can't replace a missing file) matter a lot? It's an eccentric user base to begin with, of course. Most archivists and ordinary users just create multiple backups, and the file integrity concerns aside from file sharing and archiving are best addressed at the filesystem level.