-The story line continues and fills some missing links in a brilliant way.
I always enjoyed the way anet wrote the GW lore.
Even the movie clips are better.
-Length of gameplay is ok, I try to take as many of the quests besides primary as I can find. Which lengthens the gameplay, and allows me to enjoy the full story line. I did all Norn and Ebon Vanguard things I could find, but i know there are a few that I need to find via wiki.
-Graphics are stunning, new effects on spells and enviroment just looks nice.
I only know one online rpg that is close to it, and still not the same.
-Reputation system, doesn't require hour-less grind, r4 is easy done with primary+side quests, and the buffs you get work out nice.
-Armors, I love the look of 3 of the new sets, so might go for some of them in time. And its doesn't require more to get them then it does in the campaigns.
-Weapons, I got a few with new nice skins.
-In game music, some prophecies pieces, which fit well, and some nice new pieces which I enjoy listening to while playing.
Actually I listen to metal mostly, but when playing I prefer the game music.
-Drops, got enough so that I could afford putting my necro in vabian set.
Everything bought from the rare/material traders.
-New Heroes, they look good

-Was cheaper then I exspected.
So all in all I'm happy with GW:EN