Listing Users when clicking on @TaggedRole in Chat

The idea I'm proposing is to make it so when you click your mouse over a @TaggedRole, a list with a slider bar will appear below it similar to when you click on a users profile. The list should display all the users who are assigned that role. 

I believe this idea will help with organisation, especially in servers that tag roles in certain messages to explain things or to show who to contact. This will also remove the need to individually list the people in a team; as non-admin users are not able to view the server-settings and view who is assigned to roles.

You can see my crude image which I used the paint application to create just the idea of what it should be like. Even better would to have the names & icons listed smaller so you can fit more users in it.