Relationship between Bahamut and Midgardsomr?

[Nyalia]

I don't think the geography changed that much.

Huh, okay, fair. And I didn't mean it moved much, just from somewhere not directly lake-adjacent. I thought some areas shrank from the calamity pushing stuff closer together, justifying the smaller maps in 2.0? Or are chunks just totally removed?

[Nalien]

Huh, okay, fair. And I didn't mean it moved much, just from somewhere not directly lake-adjacent. I thought some areas shrank from the calamity pushing stuff closer together, justifying the smaller maps in 2.0? Or are chunks just totally removed?

Mostly I think chunks have been removed/blocked, rather than things getting smaller. You can actually overlap the current maps with the old ones fairly well, just a fair amount of the areas on old maps have gone, though some new parts have opened up as well.

Even if areas had been pushed together though, Silvertears used to be much larger than it is. Prior to the crash of the Agrius it was a multi-tiered lake much larger than it currently is, the crash drained it of much of its water according to the Sightseeing Log. Given how Crystal Tower seems to involve a fair amount of lava in the Labyrinth and water in the Tower-proper (and if you look at the model furnishing it seems the Labyrinth supports a small lake around the Tower), I wouldn't be surprised if it was basically in a shallow part of Silvertear Falls.

Xandes Calamity may have caused more movement, since the earth was said to basically swallow the Tower whole, though given the fact that Bahamut seems to have directed Darnus to crash Dalamud into Allagan Ruins, I'm not thinking Eorzea has much in the way of tectonic activity. Stuff sunk, then Bahamuts Calamity resulted in a lot of it being unearthed again, I don't think places shifted location all that much (except the odd Twelve Stone, though I think that was more out of the developers wanting to put them all in 2.0 but not having the right zones to do so).