Perhaps I have been unable to find the right button for it, but a problem I see is when you select level up bonuses for a city. I know a lot of people have said they don't specialize so it doesnt matter, but assuming at some point it would: let me look at the CITY DETAILS.
When the level up window for the city pops up, I can't zoom to the city, look at its details, see what buildings are already built etc, etc. Especially in larger games and with the somewhat random factor of what the bonus building is going to be, I want to be able to see the detailed information on the city and where it is before I make my choice.
On level up, stop freezing the window and forcing me to choose right then and there. Either allow me to hold off on making the choice, or allow me access to the cities information to be able to make what I think is the correct one.