>>25212431What Kalos did differently than previous regions, is actually making some legit use of the 12-encounter-slot-system they've had ready for a very long time.
>pic related (seafloor cavern from RSE)However, they STILL didn't even have to make use of the Level "ranges" in that system, even for Kalos. As far as I know, no game so far has had any map with wild encounters where the Min and Max Levels of a slot were not identical.