I know about repository and branch permissions. I know that branch perms only control which users/groups can commit/push/delete a given branch or branches within that repo. But what I would realy like is a branch perm that controls even the visibility, and therefore the availability of branching from a specific branch or branches. For example, I'd like only system admins (users who are members of the stash-admins group) to be able to branch from 'master', and allow everyone else to only branch from the 'development' and sundry feature branches. For those who are not in stash-admins, I don't even want them to see the 'master' branch in the "Branch from" drop-down in Stash's "Create branch" screen. Do-able?