I'd really like to see the ability to define a VM as a headless VM.
Such a VM would always do the following:
- Always start headless - no possible way to do anything but!
- Always remain running in the background if the VM window was displayed via the 'Show' button - ie. no popup menu on window close.
I'm sure this would be a relatively simple implementation as it's just specifying rules for the VBox UI. It could be enabled via extradata if that shortened the development lead time. Auto start/stop works so well and this is the missing piece of that puzzle.