Giving admins the ability to only allow users to do certain verbs or actions inside of a verb would be an advantage. Not a blocker currently.
We would love to see this feature.
There is not enough current demand for this feature. Be sure to vote/comment to help us prioritize. Instead of this feature we are planning on RBAC using native kubernetes functionality: https://kubernetes.io/docs/reference/access-authn-authz/rbac/