Add a horse.... But they are more detailed, and more vertical, you spend time at both ground and rooftop level

Nope. Horses always stay outside of the cities, you can't enter with them. You are right about having 2 "levels", but then in GTA you can enter in more buildings than in AC, your house(s), food stores, ammo shops, etc.

why GTA ain't about stealing cars no more? by the name of the game... it could fool me!

i wish to play in some other city like always. every game has american cities because the think they have to have american cities to sell more games in america but something like hamburg (with the famous redlight destrict) , barcelona, macau (bigger casino economy than vegas and more interesting), cape town [would be awesome with the table mountain, see, an isle (robben island where mandela was jailed) and the city itself] or something like that would be so nice. every game (not only gta) the same cities it gets so boring.

if someone will make a cape town game i will buy it twice because they derserve it for the great idea and for their courage not to put a standard city in the game which 100 other games had as well.

You clearly haven't played Brotherhood...

I'm afraid you are right.

Firstly, play it! It is awesome

Secondly, the point I am trying to make is that you can ride horses around the city, but there is still a countryside (though it is really dull actually...)

I will, probably this Christmas once they have released Revelations and it drops its price (that's what I did with the first 2).

In both Assassin's Creed 1 and 2 you could travel the countryside, and it was big, but between areas there was a loading screen, something that would be criticized in GTA.

Hoping for an entirely new setting this time, but with the same fun as San: Andreas was.

Let me fly planes again!

Yeah, but Brotherhood changed that so it was only Rome, and there were no loading scenes apart from quick travel and going into buildings