It seems like the whole story of the whole GW is based on the events that happen on Tyria and what we should do to not let this planet die.
Tyrian see Tyria as the All that is the representation of the magic, the dragons.
The awakenings of the dragons has been a natural thing- they sleep, they rise, they gather the magic, they sleep. But everything changed when the Forgotten cleansed Glaust, and this cleansed form of Kralkatorrik's champion was named Glint.
The Forgotten appeared. Their appearance was meant to give Tyria another idea to deal with the All that was meant to change this neverending circle of the awakenings of the Dragons, until they take the whole world for their own and there is only their influence left in this world.
The Forgotten got a mission: Balance the magic of Tyria, stop the circles of the awakenings.
We can assume they are from another world, somewhere else than the dominions of the Gods, because they have the knowledge that the Gods didn't possess and the Forgotten shared with them.
Glint said that she knows a lot, but not everything, and wondered what do the Gods know what she didn't hear from the Forgotten.
So the Forgotten shared their wisdom with the immortal Gods, but didn't share the same wisdom with the one that they cleansed and prepared to balance the magic.
Interesting, isn't it?
Why did the Gods truely departure from their homes for ever? Did they leave the sinking ship?
They left just before Kralkatorrik got the magic that gave him an ability to travel to the worlds beyond Tyria.
Why was Tyria so important for the Forgotten so they came here to help it?
What are the Gods? Where did they get their powers from?
Who are the Forgotten? What's the planet they came from? Was their home destroyed by their All so they escaped it?
Who are the Astral Creatures and whom do they serve?
Why do the Astral Creatures appeared in a fractal that was caught in a loop?
Why did the Harbinger of Woe have an icon of a planet's destruction?
Why did the chunk of another world in Jahai have the mushroom that created the projections of the Astral forms of Tyrian characters?
Where did the Human came from? What's their original home?
What's Tyria? (Truely).
Episode 4 made me hope we'll be much more focusing on something more than Tyria.
Seek, and you shall find.