Actually, good infrastructure can help shaping a nice city. But I think some of the cities are trying to start out too big. Sometimes half of the brickcount is wasted on roads which nobody will drive on, but make commuting a real chore. Also, realy city dynamics wouldn't work anyway, because there's simply not enough people.
CityRP was built on an entirely flawed economic model, and it's pretty much a deathmatch anyway. Seriously, when was the last time you saw people actually roleplaying? No, shooting up the place because you are a homicidal maniac does not count.