1.) Yes, qbittorent has the option under 'Downloads' and below 'When adding a torrent' a box to tick/untick the option to 'create subfolder for torrents with multiples files', I have this unticked so when a torrent that contains more than one file, it will not create a folder with all the files cont...

Thanks, do you know if 1 and 3 are options?

Are any of these features/options available in Deluge and do they 'actually' work?

1.) Option to 'not' create a subfolder for torrents with multiple files
2.) Do not start the download automatically
3.) Automatically exclude files based on extensions