I, for one, want more eye candy. That would be my number one reason to upgrade from FS9.
I really hope that they can create sceneries that look like photorealistic sceneries similar to Megascenery, but in a way that it is not so blury and two dimensional when flying low. To accompolish this and create a more 3 dimensional look, the Photo scenery should accomodate lots of Autogens that blend onto the photo realistic textures. This is something that creators of Megascenery have not yet been able to do. In fact, because of their inability (or lack of resources I should say) to blend the autogen into the photo scenery, they recommend a lower autogen complexity when using their product.
If creating a 3 dimensional (less flat?) photoreal scenery is not possible, then just use the photorealistic scenery outside of the developed areas (such as those cool mountains and desert photo textures in Megascenery S.CA) and improve the textures and autogens of the cities.
As it stands, the autogen has real potential for improvement; improvements that can really change the look of the sim as a whole. Lets have more commercial buildings along main roadways (instead of scattered houses). Throw in some shopping centers! As you move away from main roads, increase the residential autogen.
Is it me or do the autogen objects look too big? Fix the relative size of the city textures to the autogens. Have you seen the textures representing local football fields? The houses next to them are bigger than the football field. The fast food resturants (with big chicken) are so much bigger than widths of the highways next to them. (I believe that the size of the autogens are okay, its the texturs that need fixing.)