Bethesda added many little things in the game for sure and the little things I think end up making the biggest difference to if the game world feels believable or not. But I wish I could see my footprints in the snow! Or the ground become wet when raining or at least the rain drops splashing on the ground. I also have yet to see the accumulating snow they talked about..
Maybe in the next TES game we will be able to see many more little things.