What this game should do to increase longevity

[SturmChurro]

I miss the days where an expansion would be part of the world, but its own thing. With new antagonists and protagonists, even if there is an underlying theme.

ESO has that. Anyone of any level can just do whatever content in whatever order. It completely destroys the flow of the story, and the writing shows it in many ways, but everything is leveled to everyone. So players can do it. Personally, I don't like this, BUT that game also has a lot of other problems - not even like the writing was super amazing to begin with the weird explanation of cadwell's gold.

um your a bit reaching so Ill explain how it could happan for you Lets say we Kill all the empire bring peace then beat all the ascions and as a next journey the mother crystals sends us to another world like the first this would be progression and not first start .. dropping old stuff doesn't mean a fresh start and no progression lol

I am not stretching, the OP above said one free level boost. What you are stating here is just a new expansion and do it like WoW. "One free level boost" when a new expac comes out and start at that expac. - Which that on it's own isn't actually that bad of an idea, to be honest. Should have just said "let's get a free level boost for the next expansion, the story is getting rather bloated!"