Tbh I rarely use the plugins anymore, I just like that I have the option... no longer using RSS feeds but when I was, I had a Deluge plugin set up to auto-dl and organize files based on regex. Maybe this is an option in other mature clients these days, I dunno.
I've got a docker host and a Deluge container. I think it's pretty rad to be able to feed the server daemon a torrent from anywhere on my home net and have it get to work downloading and seeding. Was a bit of work but it's been set-and-forget since.