I was curious about this and i set one game to high grass + dry, to me it looked like the ball was way slower when passing, like if it had more friction to the grass, wich is the case in a lot of real life Brazilian stadiums.
Yes u can do that but in the edit mode for each team specifically
Also regarding the R2 shoot, imo its not overpowered, its just where it should be, for exemple playing with Falcao, if the defense let me shoot from the inside the box with a 91 finishing player it was almost an automatic goal like it should be, but when i tried the same kind of shoots with the brazilian league players i jsut cuoldnt hit them like that, most went outised or just in the middle of the goal, so for me as long its very dependable on the attributes im fine with it, players with high finnishing can indeed place the ball in the side netting in real life if given space and time. For me the R2 shoot is an aspect of this game that is way ahead of FIFA15, in fifa its barely imposible to score a curled low shot from outside the box, where in real life and in PES they can happen very often if in the right position and with the right player, for exemple this goal is impossible in fifa and very realistic in PES:
https://www.youtube.com/watch?v=9VMvg-tUbJg
Regarding passing, at least on Superstar the AI intercepts plenty of passes, evan more than i would like lol