I wish it was a TUI. Windows is a plague I try to stay away from as much as possible, and it already gives me headaches to setup WSL and manage them over ssh. Some things you just can't do w/o remote desktop... And sometimes WSL crashes and there's literally no way to recover except to restart the whole machine.
The only reason I use Windows is because Nvidia drivers are easier to setup. But once I'm inside my Fedora WSL, that feels like home, not the Windows host.
I think the UI is pretty slick but agree having a TUI option as well would be awesome. Everything in wsl management (import, export, register, compact, etc) can be done with shell commands I believe so a tiny performant TUI might be a straight forward thing for op to add in the future though.
Are you sshing into the wsl instances or he windows host? Pretty much all my interactions with wsl is using the wsl cli. Other than the very initial step of enabling wsl, mostly because I never memorized the powershell enable command.
I ssh directly into WSL but for setting it up (auto-start, recovery, etc.) I ssh into PowerShell (which I hate). A TUI would go a long way there because no one wants to learn PowerShell.
You can use wsl.exe from powershell to manage wsl.
FWIW I started reverse engineering the WSL2 API -- it's not terribly complicated to do most tasks without the CLI (which is clunky IMO, as it had a number of times where it changed in backwards/forwards incompatible ways)
https://crates.io/crates/wsl-api