I think this discussion about the balcony is interesting. Usually I am lazy doing calculation for free games, but somehow, I felt like this balcony did not seem that bad, so I decided to check out for myself . I found out, that in MY city, I would build the balcony, despite it being seemingly bad at first glance. Keep in mind, that I ran those number for MY city, which is in the wood elves chapter, but I am just starting it, because I am investing heavily in wonders right now. So, right now, I have orcish houses, which I used for my calculation. But I DO have weeping willows, so I used those as a reference. I do not count mana. This might seem wrong at first, but a building, to generate mana, needs to be connected to a road. The balcony does not. I think I could disconnect houses and they would still provide population, just would not produce gold anymore, but that would be kind of a waste. Adding roads in the equation make it complicated for no reason, so I choose to ignore road and only compare culture and population bonus.
Here we go :
Weeping willow. 25 squares, 3500 culture : 140 culture per square
Orc house : 900 pop, 12 squares : 75 pop per square
Total : 2 squares provide 140 culture and 75 pop
Balcony : 720 culture, 6 square, 120 per square AND 240 pop, still 6 square, 40 pop per square.
Total : 1 square = 120 culture AND 40 pop so 2 squares of balcony are worth 240 culture and 80 pop
Final : Orc houses and weeping willow = 2 squares worth 140 culture and 75 pop
Balcony = 2 squares worth 240 culture and 80 pop
Final verdict : That balcony is actually pretty decent. Of course, numbers would change if I was further down the tech tree, but at this point, I want this balcony in my city.