Opinion Rant: I think I just found a reasonable reason why we are not getting Snow Depth.

OP, I totally agree that most of the time gameplay is more important than graphics or aesthetically pleasing features.
But immersion is also important in a video game.
I don't particularly care for CL but I know a lot of people are pleased they can feel immersed in a city-like environment. I even saw people on the forums who said they only played in SM.
Similarly a lot of people are more interested in feeling immersed in the different seasons than in the other activities included in the pack.
I think my point is, just because gameplay is important doesn't mean the rest isn't.