Solution 9 - Unfounded Speculation!

[Mixawaves]

So weird that to those people, Solution Nine is a debacle waiting to happen, but Allag, Alexander and Garlemald were fine.

Setting aside that a lot of people just don't want any modern tech in the game, I think some of the backlash is just not having the missing info of how they exist. Adding a new, actively populated civilization that surpasses the technology of anything we've seen thus far, and that no one in-world has ever hinted at requires a bigger narrative lift than something like Alleg does; evidence of Alleg have been everywhere in-game and they're wildly known and studied. It's going to be very out-of-place if our first canon mention of Solution Nine is random people around Tuliyollal casually mentioning their wacky neighbors to the north.

My expectation is the place is completely unknown to Tural and hidden when we get there and gets 'found' during the events. It could be cloaked (based on the original 'SECRET'-marked art of Shaaloani vs the updated one suggesting it could be phased) or some other factor(s) make it impossible for others to find. As much as I personally adore the cyberpunk vibes being added to the game, it's not going to work if everyone across the ocean knows about 2060 Las Vegas but no one's ever thought it worthy of mention to us.

[Iscah]

a new, actively populated civilization that surpasses the technology of anything we've seen thus far

I haven't seen anything so far to think they "surpass the technology of anything we've seen".

The styling is a bit more modern and less abstract-scifi but they seem at most equivalent to Allag, and we don't know anything about what their "technology" actually does beyond produce a lot of glowy lights. Even the Ronkans had that much.