I had only thought they added the little Hobbit town down south. But during the recent double XP weekend, I dusted off a couple of my low level alts and played though Evendim. I was surprised to see a whole bunch of new quests around that Ranger island (Tinnudir?), including that quest chain that didn't require you to turn the quests in after you finished them. As well as some quests basically rewarding exploration - finding things in the ruined estates.
They also re-did some of the more annoying quests, like the one at the Eave-spires where you previously had to run through that wolf-wannabe camp three times. Now you only need to fight your way through it once. That really bugged me. "Here, go fight your way through the camp to get X". "Oh great. By the way, I want you to go back there and do Y"
If only they could redesign other parts of the game like Evendim.
R.I.P. City of Heroes and my 17 characters there