from a marketing point of view, fully urban options are always going to sell more - you'll only ever want one future farmstead, but you can use many of the same building in a cityscape board.
As apoc says, the same goes for the modelling perspective - people are far more likely to make their own 1-off piece, but buy in reasonable priced urban buildings over & over again.
As for style, blade runner is pretty much just a very cluttered, modern urban. I like that style, but with a few sleek elements overlaid - very much new built on existing as cities expand & grow over & around what become "historical" buildings from previous ages.
