Naughty Dog really worked on the balance. The sneaky perk now only applies when crouch walking. Damn, that really threw me for a loop. I was used to just walk, but not sprint, and I'd not show up in Listen Mode. Got stabbed a lot before wising up to the fact.
Love the upgrade to Strategist. See close-by enemy duders on the minimap, know when you've been spotted, respawn on friendly dudes early, if they aren't engaged in combat. Good stuff!
Interrogation is pretty interesting, certainly beats the hell out of supply raid. Multiple First Aid 2s on your team seems mandatory; crafter is also insanely good because shivs are the end-all be-all. Selfish perks like Stealth are greatly disincentivized since you have to move quickly enough to get across the entire map. Molotovs are perhaps too good again since one guy can hold out pretty well solo with 2 or 3 of them if he moves smartly enough (I've gotten 5 defensive downs in less than a minute before). I love that death doesn't really matter as long as you don't get interrogated. Personally I already always played for shivs so all of this just benefits me. Of course you still can't score in the 7k-9k range like a good survivor match.
@pixeldemon: Horde mode makes approximately 0 sense in the Last of Us' universe; it's about killing a handful of people at a time at most and taking your time doing it. Also Joel and Ellie are the only really competent mass murderers around; any other random character wouldn't really work out since they'd kill like 5 people at best before dying horribly.