Zappa is pretty cool, I haven't had a chance to use it myself but want to find a project to apply django-zappa ( https://github.com/Miserlou/django-zappa ) on django-cms or wagtail... not too sure how that'd work out though.
Zappa author here - Wagtail works great on Django-Zappa. I have also been slowly writing my own CMS, https://github.com/miserlou/zappa-cms, although that's not ready for public consumption yet!