I understand it's been what we used to call "crunch time" where I worked, and I can sympathize. I've slept at my desk a time or two.
If you talk to @ermo, please tell him I just finished reading "Prepare for Packaging" in the Help Center. He locked our discussion before I could reply to him. I have a good development workstation that's been getting lonely these last few years, and I've used tools like make and git at work. My ambition is to help with the packaging, but right now I need to make sure my ambition doesn't exceed my current ability.
I plan to set up a development environment on that workstation, and further evaluate the idea. Is there currently no packager for VirtualBox?