If you want to use transmission as your torrent client I recommend checking out https://github.com/haugene/docker-transmission-openvpn . There are some additional configuration changes needed for mullvad but it should be straightforward.

Yep, I’ve been using it daily for a few years now to keep my personal, social, research and work lives separate and compartmentalized. It’s the most user friendly way I’ve been able to keep things straight with the different color schemes and ability to run whonix/Debian/fedora/windows and switch between them with ease.

If you want the security/privacy of whonix capabilities with the flexibility of fedora you should checkout Qubes OS. As long as you have the correct hardware to run Qubes it can make for a secure and unique experience.