Tailscale - Custom Control Server Option

I run my own Headscale deployment and would like to use the Tailscale app on USBX with it. You just need to add an option to the existing Tailscale app to accommodate:

tailscale login --login-server=<URL>

https://tailscale.com/kb/1507/custom-control-server

I am imagining something like an extra argument for the existing installation command (where <URL> is passed to the above internal Tailscale structure as required):

app-tailscale install -s <URL> -p <your_auth_key_here>

Could we please get this option? I don’t imagine it would have extensive development time attached.