1) So let's say I wanted to kill everybody with military. Should I just destroy all cities except for the capital and focus on building my own cities when it's convenient? Or are captured cities worth it?
I am your classic warmonger and have won dozens of domination victories at the Emperor level. I don't just go for the "easy" domination victory by conquering the capitols; I conquer each & every city & little burg on the map. I almost never raze captured cities. Because my goal is to beat my own highest score (currently 10,077), keeping the cities as puppets adds to my score. Once in awhile I will raze a little conquered city (pop 1 - 3), one which offers absolutely nothing -- no happiness buildings, no luxuries.
As far as your quetion "... are captured cities worth it?"
YES! All your puppet cities have a gold focus, so you can cease worrying about gold and just concentrate on building your military in your core cities. I usually have only 3 or 4 core cities, along with dozens of puppets. I annex cites once in awhile -- those that are very productive. Then I buy a factory, all the happiness buildings, etc., and put them to work producing bombers or such.
Plus, the increased population of your puppet cities increases your science beakers a lot -- especially because the larger puppet cities will have all the science buildings.
Plus, after conquering about half the world you will find that you are raking in 1000g to 2000g or more every single turn. So you can buy alliances with every single CS on the map -- thereby increasing your happiness + your culture + your science. So, bottom line: Puppet cities are totally a win-win.!
The_Quasar said:
it depends on the city... but mostly yes... you'll need quite a buffer of happiness, as when you initially raze a city, it causes a lot of unhappiness, especially big cities, and they take a long time to raze too... worst I've ever had was +30 unhappiness.
I've never had overwhelming problems with happiness when conquering the entire world (Emperor level, standard size, standard maps, standard speed). I go for all the happiness policies (except the Piety tree, which I avoid because I like the Rationalism tree better). There are almost enough happiness buildings in the captured cities to counter the increased unhappiness from higher population & more cities, but every so often I might have to annex a large city just to buy happiness buildings.
-- Cliff in Virginia