Promapp Roles Management

It can be difficult in large organisations to manage Roles so we would like to propose the following improvements to help deal with frequest staff changes:
1. have the ability to run a report showing historical role changes (e.g. if we reported on the Operational Delivery Lead role it would show all the people who have been in and out of that role historically)
2. allow the management function within the Roles area of Promapp to have the ability to see changes to a Role i.e. a change log.
Thanks very much for your consideration on this matter.
Cheers, Gary