There must be more we can do, but I honestly don't feel qualified to say what it is. Ben Hale is the fellow to ask, he's the JBP maintainer.

I've recently toyed with the idea of taking libbuildpack and OpenJ9 and just ... seeing what I can do. But I'm ill-qualified to tinker with either and it's in the pile of fifty kerjillion other sideprojects I want to do.