Open sourcing our libraries is obviously just the start. We're really keen to hear about any other uses that people might have and move HyperKit in the direction of easy integration with higher-level frameworks.
For instance, direct ports of unikernel projects to run against the HyperKit kexec APIs would be really fun. Any takers for MirageOS or HalVM? :-)
We've started keeping a list of "help wanted" issues for anyone interested in getting started with hacking in this area: https://github.com/docker/hyperkit/issues?q=is%3Aissue+is%3A...