I'm not aware of any such feature in development, however this is a good suggestion. I'll share your specific use case with the VIRL Team. In the mean time, I'll loop in alegalle to see if there's an alternative solution.
Thanks for providing it (helps a lot).
Cisco Learning Network
The curent VIRL 1.x release is the last release of that architecture. We will very soon be releasing VIRL 2.0, which among other things eliminates OpenStack and Maestro from the VIRL Architecture. Stay tuned, but we are doing no new development on the current VIRL release.
Product Manager, VIRL/CML