SE, Temper Activation Rate

[cidbahamut]

Maybe when a MMO is getting close to a decade old, and getting new players is very important?

EDIT: When most of the rest of the game's Endgame content has already been made more casual?

I'd say there's a difference between designing content to be more accessible to players in general(yay for no more 24 hour spawn window nonsense), and designing events specifically for casual players.
Also there's probably a distinction to be made between events and end-game events.