With 21 expansions to date, I find it a little strange that they have a two month timer AFTER progression bosses are killed before a new expansion is opened. Daybreak got a tremendous reception with Ragefire, but I think it is absolutely silly to expect people to hang around or even come back when Kunark is unlocked. And eight months for Velious after that.

It should be 2 to 4 weeks tops. They are delusional if they think they can get several years out of this.