I find it really annoying that the mortal realms innately act like the Eye of Terror in 40k, where nothing is stable, the lands shift constantly depending on the magic of the area you better hope your crops don't turn into burning fire elemental plants or the trees don't turn into living lead poisoning. I understand the center of the realms to be more stable, it seems like if I want a "normal" domain, I have to pick the metaphysical center of a realm (because it wasn't confusing enough the center has to be not really a center?). These centers are likely heavily contested, which is why it makes sense for my 4 separate projects (with room for more) to be aligned with with each other because a center region would be held down better that way. I'm not yet an AoS lore expert, what do you think?
The original idea was its a border between Ghur and Chemosh, where a river loops in which is believed to be part of a living terrain feature in Ghur leeching mineral sustenance out from Chemosh. But these guys are expected to stick with each other for hundreds of years, through present day age of sigmar. Maybe one day I'll change the geopolitical structure and some of these will become enemies, but I like imagining myself as the animating spirit behind all my ingame armies unless they're like Imperials and Chaos. That would be silly. I'm not a silly goose yo.