I really liked the snow. The snow covering on the trees was a nice touch.
However, it does cause a few problems. The chat window is almost impossible to read with heavy snow on the ground. We need to be able to either change the colors, or set the chat window transparency.
Also, grass does look horribly out of place in heavy snow, and makes it harder on the eyes. Heavy snow needs to cover up the grass, just like any other ground texture. It could be that we only got a few inches so far and it will eventually cover, in which case thats great.
Overall, winter looks very awesome! I'm sure my opinion will change once the freezing cold affects my character, but for now I love the winter!