All in all, this announcement was probably one of the most conservative one. While i personally think it is good that blizzard don't use all their cards even in the last patch they have added, but really, there was far too little content. Beside of Dragonriding and maybe content they added to it, there is nothing about what endgame-content they will add with Dragonflight. What i'm afraid off is that they simply add the most basic content: Crappy World quests and time locked "Convenant"-quests, and that's all they add. Because beside of this, nothing was announced.
While i personally wasn't a fan of island expeditions, Torghast was actually not bad in the idea. The issue of torghast was not itself, but both the lack and the owerwhelming ties to player power and no meaningful gear progression actually killed it. Nobody wants to play a game where you can't progress inside Torgast itself, but instead need to play somthing else to get better gear to progress there.
But Dragonflight has absolutely nothing yet. Maybe my concerns are unnecessary, but i don't expect anything like Torghast, Mage Tower, Island Expeditions at all, since if they had something up in their sleeve, the yould have announced it.