The splash images reflect the themes of the wonders and their effects. Yes they are both recent images, but the game does go up to Nuclear Fusion so there we are.
The Sao Paulo church is very cool, nice, I didn't find this one in my research. Unfortunately the icon would look just like the Temple of Solomon wonder...
The reason the great works have to have this is because in the normal game they are attached to specific great people and have associated art. I can't let you buy great people with gold for technical (and balance) reasons so I have to do it this way. Maybe a way could be found to make actual "fake" great works to pick from, kinda like how the White Tower gives you the Crown Jewels, but it's a lot of work. Moreover it's a lot of art assets to be enough to allow people to use this policy over and over, and that would make the mod very heavy space-wise. Indeed, the point is that these great works are... modern art. Mass produced, shall we say.
The Sao Paulo church is very cool, nice, I didn't find this one in my research. Unfortunately the icon would look just like the Temple of Solomon wonder...
The reason the great works have to have this is because in the normal game they are attached to specific great people and have associated art. I can't let you buy great people with gold for technical (and balance) reasons so I have to do it this way. Maybe a way could be found to make actual "fake" great works to pick from, kinda like how the White Tower gives you the Crown Jewels, but it's a lot of work. Moreover it's a lot of art assets to be enough to allow people to use this policy over and over, and that would make the mod very heavy space-wise. Indeed, the point is that these great works are... modern art. Mass produced, shall we say.