The Division added Classified gear sets. The cool thing is that having a 6 piece set grants very cool abilities. Not to mention each Classified set allows you to re-roll 2 of the perks. I was a member of the reroll addicts in D1 and getting the perfect stats was always a goal. So the Division has opened that up for me. The different DLC's are pretty good too. They added exotics and new areas of the map and made the DZ more user friendly. You have to actually initiate going Rouge and can't accidently shoot someone to go Rouge. Overall it is hard to explain but for instance after a night of playing you could legitimately spend an hour or so going through your gear to make sure what you got wasn't any better than what you had. Just a overall fun experience. But not for everyone.
I might try to pick up AC. I have heard a lot of good things about it. But long term, I would love for D2 to make a comeback. My optimism is low but secretly wish it becomes the game everyone comes back too. Just wished it was there from launch. I think that was the problem with so many D1 players in general. We all expected the game to be the greatest creation of any video game ever and when it didn't meet that expectation we felt slighted. So hopefully they get their crap together and get it back to where the community jumps back in and gives it another go.