That's the problem. The game is stagnating. Lucky for A.Net, the core of GW2 (and we had the exact same quality in GW1), is pretty darn decent: so even if A.Net continues to stumble, the game will not suddenly become of the worst games ever. It's still going to be a pretty decent game, but sadly, that's all it's going to be.
Unless A.Net rethinks their stance, GW2 already peaked creatively.