korovev wrote:
Apparently Ae’gura was scaled from its actual size (in PotS you were supposed to see it only from the Ferry Terminal, and the Kadish Gallery occupies the space behind all the doors in the Canyon Alley), so while not ‘a mile high’, the central stalagmite could actually be taller than what it seems.
Not quite, it does occupy more space than it should because it's at an angle. If they had put it in straight they'd have needed to change the rock mesh on the great stairs (which they should have IMO).

Oddly enough I tweeted about this a few days back as I was having trouble with fitting the D'ni Figurine shop in.
The above is an overlay from Blender. Center image is the Kadish Gallery with part of the Great Stairs to the left, concert all to the right, and the canyon at the top.
But yeah Ae'gura as it appears in game isn't scaled right. We'd need to scale the island up to get everything to fit right.