Speaking of museums I wouldn't mind if they went back to just one museum building instead of the art/archaeology split. That being said it would nice if you had a choice to fill it up with Great Works of Art, Artifacts, or a mixture of both.
Only if that would make it possible to have a Opera House/Broadcast Tower choice later in the game.
I'd like to see Paleontology Museum, and paleontologists who collect fossils that grant science and tourism.
Military Museum would be nice as well.