My general rule of thumb is: as long as only 2-3 cities are having a happiness problem, I tend to hire a scientist/taxman (or even an entertainer, if required) in those towns. With more cities affected, it is definitely worth to increase the lux slider and put those specialists back to work. Of course there are exceptions to the rule. If all of these 2-3 cities would lose their magic number when hiring a specialist (e.g. dropping from 10spt to 9spt), then it is the lesser evil to increase the lux slider. Or if at the moment food and growth is the most important point. Yes, except that the expansion from the free temples is "towards a domination victory", not conquest... For conquest the ToA doesn't matter that much. (Apart from the extra happiness, which may raise your empires production if you lack luxuries.) The important point here is, that in order to achieve the 66% territory as quickly as possible, you need to cover one big continent completely within your borders. For this you need to cover it with towns in a CxxxC spacing without ToA and in a CxxxxxC spacing with ToA! So you need to build 40% less towns, if you have ToA! For this it is certainly worth waiting until an AI city has finished ToA. Likewise it's worth waiting for other useful wonders like Pyramids, Hanging Gardens, SunTzu's or Leonardo's. (If it doesn't slow down your expansion too much.) However, I would not necessarily wait for the Great Library in a game like this. We already have all the techs we need, and capturing the GLib even bears a certain risk, because you might learn Education before you got the cultural expansion from the Temple of Artemis! This would of course be a disaster... So if you still didn't get the ToA-Boost by the time you capture the GLib city, and if you are uncertain about how advanced the other AIs are in the meanwhile, better raze it... Yes, I think I noticed that if you have once broken a peace deal before the end of the 20 turns, and other AIs know about it, then they won't give you anything (in terms of towns/techs) in a peace deal anymore. So even in a barbarian game like this, it is worth keeping your "peace deal reputation". Breaking gpt deals or resource deals, however, doesn't seem to have an influence on the "peace reputation". There seem to be three separate types of reputation: "peace deal reputation", "trade reputation" and "RoP reputation".