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Right now, we don't know of any specific plans to do anything on this level, but if it's not being considered, it would probably be moreso because the less invested players wouldn't respond very positively to it.
It's very important to tune that sort of thing to the correct point of engagement for the playerbase you're targeting, so I think they'll assess if they want to go that far, in Alpha-2.
We know that there might be Story Arcs that can be triggered in somewhat similar ways, though, and that can create certain changes. For example, we've seen a demonstration of an area full of one enemy type, players clear the story arc, and the enemy type in the area changes because the previous group was defeated and a new group moved in.