What can done that would help admins to understand roles...
Fully separate CONTEXT_COURSE, SITEID from COURSE_SYSTEM
Urgent: Missing role and capability documentations
Move legacy capabilities down the bottom of the list in a new section to help avoid confusion
Implement import/export "Permissions" settings for "Manage roles" tab
Add user trusts
cloning and import/export of role definitions
Feature Changed in Role Mappings - Is it wanted in core?
new effective permissions tab in user section
Automatically genereate an explanation for the has_capability computation for a given user in a given context
Improve the user selector used on the assign roles and group memebers pages
Improve explanation of legacy roles
Improve the transparency of Roles and Capabilities by adding a View permissions tab
Capability definition should include list of contexts where usable
Localised standard role names and descriptions
Provide basic Assign Role that only shows roles appropriate to context level
Define role should have a basic mode that only uses checkboxes
Add configuration option to select role for guest - guestroleid
Add new predefined role "Authenticated user" for all logged in users
New capability for "safe" overriding
Add role reset button into role definition form
Show default capabilities in role definition
'Override templates' to apply common sets of permissions in modules
new function in mod/*modname*/lib.php '*modname*_get_relevant_capabilites'
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