When people talk about GW2, they often mention Dynamic Events, the personal story and the skill based combat. These are large selling points, and will probably be branded on the back of the box. However, many people forget about a video game's little features. These small details or conveniences are what really make a game go from "good" to "great". When you say a game is polished, you generally mean that it has many little details that all work seamlessly in order to achieve a great experience.
What are the little things you enjoy about GW2? What are the small touches that make you smile whenever you see them?
Personally, I think it's a tie between a carrier pigeon delivering mail to you, and the fact that you can select your own music that will play over the game soundtrack, and lower its volume during dialogue. Skyrim soundtrack in the mountains? Done. Shadow of the Colossus theme for bosses? You got it.
The SWTOR version of this thread for those interested: http://www.mmo-champion.com/threads/...6#post13573366