Angry Grimace
Two cannibals are eating a clown. One turns to the other and says "does something taste funny to you?"
That's pretty much where I am both regarding Amonkhet (underwhelmed) and Ixalan (excited). Even though, again, Ixalan rares, at least the ones leaked, seem to be more on the underpowered side.
I think the general idea is that it plays like battlecruiser magic - you seem to get the option of build-arounds like vampires or to just play full treasure and use the treasure to power out huge fuckoff dinosaurs.