If you create a subformat option I would humbly recommend focusing on Hyper-V and Azure compat, and then create an option that enforces the legacy behavior with your patch. This is essentially what some Linux distros have started to do.
If you create a subformat option I would humbly recommend focusing on Hyper-V and Azure compat, and then create an option that enforces the legacy behavior with your patch. This is essentially what some Linux distros have started to do.