I liked the ability to run multiple linux distros and a windows 7 VM for stuff that needed that, but scrubbing PDFs I think is one of those underrated things considering how much malware comes in through those. Like I would rather not do that in a docker container of all broken condoms. Right now I just have a seperate computer to take care of that. I'd probably use qubes if I had an intel laptop as my daily driver again.
Oh and the only other thing was laptop battery life. Maybe an hour and a half tops.