Depends on what you're after. In terms of mechanics it's a completely different game, but lore wise a phenomenal amount is tied in to GW1. It's almost fan service: the game.

Man, I miss GW1. That skill/class system was amazing and still goes unmatched in its flexibility and depth today.

I want to create a spiritual successor to this but I'm only a dev, and not an artist. It's really killing me. I want to make a game like this before I die, but it's looking unlikely.

The servers are still running and it has had some QoL and even added some new Elite Skills and weapons.