I personally wouldn't mind a GTA game in set in Wester Europe in general. But TBH I'm hoping GTA: IV will be set in the US. Or maybe they'll start making GTA worlds with different continents? Who knows. Blu-Ray CAN hold alot on one disc (50 gig's Dual Layer). But then again they're also working on the 360 which holds much less on a single disc (they still use regular DVDs for their videogames so dual layer is 9 gigs like with san andreas [tho they only used about 4 for san an]). Anyways I dunno, I wouldn't be surprised if they made a city based on London in a future GTA.