All right, here a short report of what I loved In my first Conquest Game (which ended in a space race victory)...
The new Wonders are excellent, especially making great units appear every 5 turns, they are really worth the building efforts, with those units I got 3 leaders in a matter of 20 turns....
Army improvements are really felt, the armies really are a LOT stronger then before
Improvements to the AI are also very good, It looked to me as if the game got a lot harder...
Changes in Map-Contact Trading work great, make the game a lot more intereseting, since it is only possible a lot of time later, makes for nice little regional conflicts...
new ressources improve the map, making it more attractive
Scientific leaders allowing "age of science" are a great Idea, just A pity I only got one in a game where I researched at least 1/4 of the techs first...
Even got to see one of the AI's cities destroyed by a volcanoe eruption... nice....
well, resuming, great improvements to the game, I can only recommend it to everyone...