One tab on channel permissions that shows exactly wich permissions does some one would have if has the role(s)

I know that it is something that can be checked, but in some cases, for bigger channels, with many roles, and users with multiple roles, sometimes things can get a little crazy, and if there was a tab to show exactly what each one can do following the steps taken for make permissions:

It would be a minor headache for anyone who is dealing with it and in cases where multiple members are trying to understand what is going on, they can check there and get to an agreement, they would not change what was made before because they think it's badly made