I have two thoughts for this:
- You could upgrade each house individually, for a slightly larger cost than normal. Houses are 25w now, right? Make it 35w each to gain +5 pop. But, there is a clear con here as where you clearly would lose so much time doing so.
-Make the carpenters tech available @ university, and gain only +2 pop per house, I'd price it around 300f 400w. Create a second tech for the other +3 pop (per house), at around 500f 600w, available only at Imperial Age.
- You could upgrade each house individually, for a slightly larger cost than normal. Houses are 25w now, right? Make it 35w each to gain +5 pop. But, there is a clear con here as where you clearly would lose so much time doing so.
-Make the carpenters tech available @ university, and gain only +2 pop per house, I'd price it around 300f 400w. Create a second tech for the other +3 pop (per house), at around 500f 600w, available only at Imperial Age.