I don't know, of course I would have liked to have snow depth, but it really isn't that big of a deal to me. I would rather have no snow depth than snow depth that looks like that awful ball pit. I would also much rather have my game running smooth than snow depth. I'm still very, very excited about seasons.
Also, it might be quite nice for practical reason. I mean, if you lost something in the snow in the sims 3, it was gone until spring. Not saying that this makes up for it, just trying to see it from the bright side. I'm getting the pack and some missing snow depth is honestly not making me less excited.