We have looked at this but there are significant complexities in how to scale the multiple permeations supported by the MV permissions. For example an organization with 10 camera networks, with 10 cameras per network, with 10 users per network, and with different roles per user, leads to a very complex situation.
We are keen to know more about how SAML users will be used by customers, and what a dashboard implementation for this should look like. Please share your ideas with your Meraki account team's system engineer, they can collect the information and share it with engineering.