Tracking Elder Dragon
Seeing as most of TA is open to the sky, I don’t see that as being a possibility. Not unless Mordy has a very… ah, interesting body shape.
Yeah… not seeing it. The Elder Dragons are all still creatures of flesh and blood. At least as far as we have seen. And Twilight Arbor is very much not flesh and blood.
Stop treating GW2 as a single story. Each Season and expansion should be their own story.
The way that I would like the living story to develop would be -
Scarlet is trying to awaken the jungle dragon (and control it maybe). This is what the Pale Tree warns her not to do in the web story. She knows that the jungle dragon is connected to the dream of dreams and nightmare, so she uses the new toxin to create more nightmares to invigorate/awaken the dragon. She is hoping to find the resting place of the dragon by charting ley lines since the dragons must have an effect on those.