GW1 and GW2 are two completely different games. I think both games can exist co-existent.
It would be nice to see Guild Wars with modern DirectX 12 and Raytracing. It also would be great to see a new campaign. There is so much landscape, that isn't explored
I'm sad to see, that World of Warcraft is still in development and get new campaigns and GW1 not. Please Arenanet: Give GW1 new life.