2.0 It has to be.

The reason we have to have caves is because we're limited in the amount of unique things we can have in the game. That's why Cutter's Cry looks like Copperbell Ant Farm, it's why TotoRak looks liek Mun-Tuy Cellars and why the Darkhold and Shposhae look eerily deja vu...

We'll get the crystal tower. Just talk to Eric in Uldah and ask him about the Silvertear Falls. But not until 2.0.