I finally got a chance to work my way through the video, pretty neat how they cycled the quests. Rifts zone wide quests work in the same way, but not as explicitly. Unless you are paying good attention, you can miss the triggers. And I don’t think they have nearly as many triggers as it looks like GW2 does – perhaps 2-3 zone, vs here where you look to have 3+ per hub. So yeah, I agree, a good step forward!
It’s really the next generation of public quests. I didn’t find any difference at all between Warhammer and RIFT PQs but GW2 really evolves them. That Norn kid area made me grin so hard when I was knocking down kids with snowballs and then a swarm of bears came and … oh man, so fun.