The watch folder feature is useful for adding automatically downloading torrents when a torrent file is saved in a specific directory.
I would like to suggest a feature for .torrent files and magnet links called favorite folders. You can add favorite folders in the preferences and give a name to the folder and these will be listed when you add a new torrent to download weather its by opening a torrent file or a magnet link and it has the same settings that the watch folder has such as recursive mode, torrent management mode, category, start torrent, skip hash check, content layout, etc.
And to also have the setting to download in sequential order and the setting to download first and last pieces first of any new torrents added to a specific favorite folder.