The most fun I've had with an MMO since 2004.
Other things I really enjoy are the NPC dialogues and the 'less than obvious' dynamic events that are nested here and there. Lions Arch is my favorite city but all of the capitals are exotic in a walking through Disneyworld kind of way.
What would I change? I'd like to see an LFD tool and I'd tweak Wv3 so that you'd have to fight your way off your own map...establish some initial frontlines.
GW2 is an outstanding game that I believe will be a really good time for a long time to come.