As someone who was very big into Guild Wars 1 and played all the expansions, I did not enjoy GW2 on launch. In general I don't get to end game in MMOs, due to it taking too long to get there and me spending all my time in non-leveling activities. I didn't even know I was on this boosted XP when I started GW2, but now that I know about it I think it should be the default experience.
Also, make action camera a more core part of the game! Give it a default keybind and tell players about it! The game is 10x more fun/playable for me this way. Tab targetting is a relic of Everquest that is poorly suited for fast paced gameplay, at least in my opinion.