tulip shoal
Currently if you want to build over a previous age building with a newer one, it doesn't give the player the option of which building it replaces and if there is an ageless building there, it's impossible to build over. This has put me in less than desirable situations where I have no where to build something in a future age because the only places it can go are on tiles that already have 2 ageless buildings. More than once this has completely prevented me from putting a unique quarter in that city.
It would be nice if you could choose to build over ageless buildings especially the basic production and warehouse ones.
somber stratus
loud wyvern
rotund pike