This table shows which dirs are exposed from your system: https://droprun.sh/docs/sandbox-overview/#filesystem-layout

Compared to your setup:

* /usr is from your host, so you don't need to maintain a separate image to have programs that you already have installed.

* username, hostname, your current directory and home dir paths are preserved in the sandbox (within a Podman container a home dir is /root)

* environment variables are easy to carry into the sandbox.

* environments are explicit (`drop ls` lists them) and can be removed with `drop rm`, so you don't need to track in which dirs you have started Podman if you want to cleanup XDG_HOME files.

It is likely that your Podman wrapper also solves some of these or they are non-issues for your. If your setup works well, I wouldn't switch to something different.