I don't have 3000 hours but +5000 Grimoire and been playing since D1 beta. I really like the Countdown PvP mode and like the 4v4. I was skeptical about no more 6v6 but I think it keeps PvP less chaotic. Also easier to coordinate as a team. This coming from a primarily PvE player. Definitely catered towards full fireteams though. Wouldn't play it solo queuing. Like what I've seen so far for PvE but looking forward to having full maps to explore. My only real complaint so far is that abilities take too long to Regen, especially in n PvE. I find you have to hold on to your abilities until it's worthwhile to use them. I am assuming this is what Bungie was going for though. Playing the beta has me really excited to play the full game.