I have played AoI some, although I haven't beaten it.
It seems a bit wasteful to include a named feature and have it be purely cosmetic. Any tile that has some feature on it should have some effect on the game. I have been requesting that mana nodes provide some sort of food/hammer/trade bonus when developed for similar reasons.
Similarly, in my last game, it seems the Fruit of Yd* didn't provide any bonuses, even though it was both in my city tile and I had a road to it. I know a patch or so ago, it added like 6-7 food for the tile. Intentional or oops?