Creating Tags/Permissions rethink

It'd be helpful if there were something in the system to prevent standard users being able to create new tags on the fly.
We have an agreed-upon list of tags for clients/cases, but users are able to create new ones when tagging a client or case, which generates confusion and admin overhead to remove them.

Also, could reporting be made available to standard users? Our client admin team need create reports, but don't need the other 'perks' that admin permissions grant.

More granularity on user permissions I think is a must.