The biggest issue however is that many Linux distros just refuse to build and distribute VBox kernel modules despite them being open source. Thank you for your work regardless.

Do you intend VirtualBox to pick up your work and integrate it? I'm really looking forward to it. Have you already talked to the company?

I really don't want this to be a one off work to potentially become decrepit and unusable going forward.

Secondly, some VBox features belong to a separate closed source extension pack: USB2/3 support, PXE boot, VM disk encryption, webcam/camera support.

Will they work with KVM VirtualBox after installing the pack?