Grand Theft Auto: informed speculations

Here is a speculative list of what Rockstar games will do in order to make 'GTA 4' the best game ever. In no particular order:

-The game will be set somewhere in Europe. Probably England. There will be more than one major city featured, but they will all be within a feasibly close distance. The game will of course exaggerate their closeness for the sake of gameplay, but not too ridiculously. The map will not be much bigger in size than San Andreas.
My guess: London, Liverpool and Manchester.
What would be cool: London, Newcastle, Edinburgh
Where it won't be set: Japan, China, Canada, Mexico, America. Among other obvious choices.

-The time period: depends on where it is set. England in the 60s, 70s or perhaps late 80's Thatcher England might be considered. If Rockstar want to hit upon the most exciting, vibrant time of the country/setting, they probably won't make it too contemporary. But its still possible.
With the specific setting also comes a variety of different songs. This is major reason why I see England as a setting: Rockstar have done all that they can with American music. British music is largely untapped, and only used in rare amounts. Music native to other countries is simply not as radio-friendly as music from America, Europe, and other countries of that nature. Can I make this statement? Yes, because lets face it, its true. I won't bother speculating on what songs will be featured; I'll leave that up to Rockstar and their originality when it comes to radio stations.