role hierarchy

It would be good if in a private channel instead of a user's permissions being the sum of permissions in that channel, a hierarchy of roles from top to bottom would be better.

In the current system, if you have the number of roles you want that explicitly do not let you see the channel, but you only have one that allows you, you will still see it. That is problematic when you want, for example, to make a level system that works in 2 or more categories that any member of the server can decide to have access or not.

Level 3|  X - (/) - ✔
Level 2|  (X) - / - ✔
Level 1|  (X) - / - ✔
Category role|  X - / - (✔)
@everyone|  (X) - / - ✔
The () indicate the chosen option

In the current system that would allow even level 1 and 2 members to see that channel, and choosing one of the other options for the Category role would force us to put the (✔) in level 3 which would make all level 3 members see that channel even those who decided not to see this category.

With a hierarchy system, level 3 by having the (/) passes the decision down to the category role that allows them to see the channel, and level 1 and 2 cannot see it because their roles do not allow it and they have more hierarchy than the category role, and in the case of a member who does not want to see that category because he does not have the category role, level 3 passes the decision to @everyone who does not allow him to see that channel.
Therefore, a hierarchy system would allow having more complex servers in a simpler and more comfortable way.
 
(sorry for the bad english, i translated this with google)