Since it seems like a lot of discussion will be about this in the new topic, I decided to add this note to the OP:
One thing to note about discussion in this thread is that a lot of us are specifically looking for cards that will change up Standard, a playing format made up of the past several sets. In the past, people complained that set themes didn't get a chance to shine in Standard, since it was too easy to shut them down, so Wizards has been trying out a philosophy where set themes don't have strong "answer" cards. However, for many players, this has backfired and made certain decks too strong. Wizards has acknowledged this, but they work too far ahead to make quick changes. Thus, people here are hoping for Aether Revolt to have cards that exile cards from graveyards and destroy artifacts, among other possible effects, and a lot of discussion will likely revolve around that.