One of the biggest talking points I don't see people addressing is the possible debunking of the popular theory of Redline being made by some unnatural phenomena after the 19 ruling families defeated the ancient kingdom.
This notion originally stemmed from one of the best theory in the community by the name of "Inherited will" a few years ago iirc.
Unless King's race and the WG coexisted for centuries on the redline (which is highly unlikely), then the most plausible scenario is that they were exterminated right AFTER the current WG was formed, meaning that the redline was a thing much much before that.
But then there's Laboon and his friends on the other side of the new world which make you believe that Redline is nothing but a hindrance to how they actually used to live
Another interesting tidbit I stumbled upon was this-
Would be interesting to see if some of these parts of the redline were occupied by other races like King's in the past, each with their own climactic conditions