I think this will add more strategic element to the game. When you ask "What improvement should I waste my shields on?", then the options are usually obvious. But there should be more options!
For example, what if you really hate someone, but you don't want to make them hate you by declaring war? You build the improvement and destroy the city, and then give the city to them! Ha! They get a destroyed city.
There are numerous other possibilities.
For example, what if you really hate someone, but you don't want to make them hate you by declaring war? You build the improvement and destroy the city, and then give the city to them! Ha! They get a destroyed city.
There are numerous other possibilities.