[UI suggestion] see town's production while building

The UI certainly needs some work. If you get a ton of resources and manas the top resource window kinda goes into the population/time window. It just doesn't look good.

I'd also like to be able build something in one city, click another city, and build something there without having to keep changing windows.

I also dislike how the prestige value is rounded down, we're basically wasting prestige and slowing growth.

I agree.

Also, when the city a city levels up and the city specialisation window pops up, you can't see your resources as the city may not be currently selected, and the window covers most of the screen. Therefore I can never remember is Fhkekalsian is my Tech or Gold producing city.

Agree with almost everything above.