Hello there, SE. I would propose that you make top tier end game into 24 man content instand of 8 man content in the future.

The reason behind this is due to the fact that as more classes are introduced that means that classes will be more separated by tiers than they are right now. This will make alot of classes into 2.0 warriors, no one wants them in their party and the players playing these classes will have to re-roll, being unable to play their prefered class.

To fight this I propose you make the top tier end 24 man as you introduce more classes into the game. This is because in a 24 man group there will still be reason to have atleast one of each class due to what they bring to the table that the other classes doesn't. This will help fight an eventual 2.0 War issue that will occur as more classes are introduced.