A useful addition might be the option to display the service account.

Rudy, I've got a script that returns the SQLService and SQLAgent accounts for an instance, but it would be really nice if it could be incorporated in your code returning all service accounts.

Lots of people have SQL instances running under the wrong accounts without realising it. If a test instance (for example) runs under the same service account as a live instance, then test jobs may have (accidentally) too much potential access to Live 😉