User blog comment:Lord Loss/Discussion of the Week: Monster Hunter Frontier 4.0/@comment-75.138.72.147-20120505131737

Espinas looks pretty unique and has a unique rage mode.

Azure Hypnocatrice has a different moveset than the other Hypnocs from what I've read, seen, and heard so he looks like a good subspecies.

The Gorge is pretty much a desert with some platforms. It still is unique though as it uses geysers to get you upon the platforms.