I went ahead and added The Palus (the Patrian name for The Tower of Eyes) in my version. It is an Epic Lair (like the Broken Sepulcher, Aifon's Isle, or Pyre of the Seraphic), provides Mind Mana, provides a defensive bonus, lets units see up to 6 tiles away, and spawns a pair of Magic Resistant Iron Golems (with animal AI so they don't wipe out civs early) that the Carnies who freed Perpentach failed to disable to guard the prison when you first approach it.
Maybe reaching the Palus could triger an event that gies out free Dungeons Maybe the Luchuip could get a second option, which lets them instead study the Golems that Kyorlin left to guard Perpentach to make all of their golems gain the Magic Resistant promotion. That could be quire useful, as it would let them enter flames (excluding the wooden ones) and Blizzard without problem.
Having Varn Gossam favor Dies Diei seems appropriate. What should Amelanchier favor though? The Grand Menagerie maybe? No one favors that yet, and its seems appropriate that the master of the Ljosalfar rangers would appreciate someone who managed to tame one of every animal.