Skirmish is coming back. It was in a live letter, and it was mentioned at E3. They are redesigning it to fit with 2.0. It will be back.
NMs are FATES, that's it.

Hamlets are now FATES.

Behest are now guildhests. Really wish they kept behests as they were, those were fun, but oh well.

Beastmen Strongholds: Changed to FATE NM areas. I'm not sure if the beast tribe mobs still drop Tapers/Feathers,etc. for entrance into the hard/extreme primal fights, but if not that's probably the reason those were changed. People would just camp natalan and...amal'ja place to kill mobs for primal entrance tokens, which you then traded to Luisoix for the entrance item. Luisoix is no more, so the entrance items are probably not dropped from those camps. OH WAIT! Entrance to the fights is done through Duty Finder, so now there are no entrance items. THEREFORE, Beastmen strongholds no longer have the same purpose they used to.

EDIT: Here's the skirmish part of E3. http://www.youtube.com/watch?v=xJW8C...tu.be&t=42m45s