Mark,
I agree with Thierry on this as I think this would cause confusion as well as split focus between two things vs including OPS more with the development. A SiG should bring together people from different projects or different interests together with a common interest. This is solely about Kolla which already has a specific project unlike say the Finance SiG which had users with a common interest of installing OpenStack for financial use.
Have you utilized Forum or BoF sessions at events yet? Or maybe reach out to the OPS Meetup team about including Kolla more at their events?
If I can be of any help let me know,
Amy (spotz)