I tend to play massive expansionalist to get a brutal advantage in amount of science (and then fight for culture and happiness) and to get massive production power. not that far into a game yet but so far I don't see much difference to normal.
What I do see is a massively annoying behaviour from city states who have built such a huge number of units I cannot get a missionary close to their city. The city states are also sending hordes of units around to clear their own barbarians which is different i guess. The city states on the whole have a comparable military to the other civs apart from me (but I am spread out much more).
I think there is a lot of balancing to be done in the rate of early growth of cities. Good to have somethign a little faster where it is possible to make a game of the early eras, but the culture growth does seem a little too fast, very quickly the map fills
Findings
Wood clearing needed to clear jungle and forest, but when building an improvement which needs clearing (e.g. farm on forest) it cannot be done until bronze working. Possible to clear it first then build the farm, but the automatic process doesn't work
TOWN_SQUARE - one description says it increases gold, one says gold and production, one says happiness, and one boosts trade routes. As far as I can see it actually does all of these?
BEWASSERUNGSSYSTEM - lots of commented entries in \CCTP\Buildings\CCTP_Buildings.xml and \CCTP_BuildingLocalResourcesOrs.xml
BUILDING_BEWASSERUNGSSYSTEM - available for any city with freshwater, but this includes rivers. It only makes sense for this in a city with access to lake tiles
Date does not make sense. in 180 turns (still in first era) the years have gone from 6000bc all the way to 4150AD