Fae in my mind 1st divide down Seelie(light) and Unseelie(dark) line

Base on the speculation that its Il Mheg is part of the 1st shard so most likely a Seelie version
I'm left wondering if we will get a dark high magic version mirrored zone of Il Mheg?
One from the 13th shard a Unseelie version of the area maybe named Ad Mheg or something such

light* thg-IL Mheg dark* kr-AD Mheg

That because the fae are stated as masters of arcane. If your shard is suffering a calamity and you had the magic ability to remove you from the calamity by making it split of from that shard as a sort of mini bubble realm away from the shard it was split maybe even hidden nearer to the source.
Then it stands to reason that Unseelie Fae from the 13th shard did the same before the flood of darkness befell the 13th shard and a dark version has been hidden all this time. To me this make sense unseelie are more likely to shun outsiders.

sure questions come from it some might answer other questions

Maybe this is why the 13th shards flood of darkness didn't trigger an rejoining of the 13th shard there was a piece that escaped it?

Maybe the primal is needed to achieve this hence titain? it's world ending stuff for a shard if a calamity happens so to hell with the risks sort of thing.