Upon completing a certain very difficult goal (say, pit 100), all (or several) of the game’s limits can be disabled at your discretion.
For example: Masterworking can exceed level 12, Paragon is no longer capped at 300, or attack speed no longer has a cap.
Any character who activates this option will have a small icon next to their name and will not be able to deactivate it. Additionally, you will only be able to play with other characters who have activated the mode.
Basically, a “enjoy” mode.
Can the icon be a big wedge of cheese, and it replaces the character portrait?
Hahaha, I was thinking of something more epic, but you could unlock an exclusive cosmetic for the helmet that is a big cheese.
This isn’t final fantasy mister.
Jog on…
But it’s still an RPG, with a lore where super-powered humans appear from time to time, especially after the destruction of a certain big red stone.
The door is to the left 
Good day sir!!
Why go out when everything is in here?
BTW, where’s Valla? We could use a nephalem…
We should give her the cheese from before in exchange for helping us (and teach us how to break the limits of reality)