I think it would make sense now, since post-merger, to have an essence circle placed at the Glowing Wisp area outside Mahagra and to remove the redundant broken essence circle SSE of Parsinia (where pale wisps use to be pre-merger). This would keep the structure balance in check (removing one to add one) and would add a bit more sense and convienence to Istaria/Mahagra. Even if it was an essence circle we would have to rebuild that was placed there (since a broken one is being removed) that would be fine.
Structure: Essence Circle
Coordinates: 24292, 30781
Structure to remove: Redundant, Broken Essence Circle SSE of Parsinia (old pale wisp location)