I might try run0 for fun, but I don't think it'll replace sudo any time soon.
The biggest issue I see is run0 purposely not copying any environment variables except for TERM.
You'd have to specify which editor to use, the current directory, stuff like PATH and HOME every time you run a command.
I'm not a fan of the idea at all, but come on, it can't really be that bad. There's got to be somewhere you can tell it what environment variables to use. Probably something like run0 systemd-edit /usr/system/systemd/systemrun/run0-environment --system-default=system
Maybe, but now I still need to remember the alias or distribute it to any machine I'm working on.
Not that difficult if you have everything managed with Ansible or similar anyways, but lots of people likely don't have that setup.