If that truly is the case, they may as well put the game into maintenance mode and stop developing new expansions. If they are truly so out of ideas there is no reason to keep going and maybe their energy and our money is better spent elsewhere.

Personally, I don't believe it is impossible to make compelling narratives going forward with the WoL or even the Scions as a group, BUT is will take a talented writing team and probably some bold decisions to pull off. Ther current team is clearly not up to the task.