Show User Emails more places in Admin UI

In our company this year a lot of users had their emails changed. A lot of places in K2 that show users (for example User Roles, Licenses, Server rights to name a few), only show user names. This has made it difficult for me to know if the user shown is registered with their old email address or their new address. Typically, when in doubt, I just end up having to delete the user, and then readding them.

I realize this is something of an edge case, but simply showing the user email address in addition to the user name on those forms would make things so much easier.