PX User Role Based Permission Sets

We are growing our PX instance quickly and lots of new users are being added. It would make administration much more consistent and easier if there were something like permission sets we could create and assign to users as needed.
Something like this is mentioned in the tip of the day:

If Full Administrators could create User Role Permission Sets, we could assign one or more Permission Sets to Users which would then update or change across the board if the Permission Set is updated.
 

Similarly, there could be a way to see all the users assigned a permission set and to remove users from that permission set.