I stopped playing Civ V. Maybe I will return to after some patches or expansions.
It's just bad that after Civ IV was released and was buggy I tried to play Civ III and had to stop after 150 turns or so because Civ IV was so much better even with the bugs. This time I just don't have this feeling, I went back to Civ IV and really enjoy it.
It's a pity that the good concepts of Civ V are so bad implemented. 1 upt is cool but it does not work because the AI cannot handle it. City states sound nice but are overpowered and their tasks are only killing other city states after turn 200. All victory types except cultural are the same, always war and city spam! UN victory is probably the worst, no more resolutions, just bribing city states. Global happiness and connection to golden ages could work but you need a small empire to get more than one GA in a game from it. I like that cities can defend themselves but they are too weak and you can take a city with just two units.
Other bad parts from Civ V are random diplomacy, no terrain differences, too few improvements, high building maintances, long building times, buildings one dimensional (this means they have only one function compared to 2 or 3 in Civ IV), too fast tech rates, the tech tree in general, no more vassals, no end game movie, no replays.
What I like more than in Civ IV is hexes, culture expansion, social policies, no SOD, ranged attack, unique abilities, no sliders.
I still have some hope for Civ V but only time will tell...