Is the snow-depth a deal breaker?

Not at all. I find it unfortunate that most complaints I have seen around The Sims 4 have been along the lines of "I wish they stopped focusing so much on the graphics and would give us more gameplay" and now that it looks like they have done that, it becomes "They didnt care about the graphics and worried about the extra activities". I get the simming community is a large, diverse group of people, but the endless complaining is tiresome. I think there is a difference between constructive criticism and complaining (and I am all for criticism when done appropriately to help the developers create a better game- also voting with your wallets), and there have been many people who have expressed their opinions maturely, but there is also a large group of people who aren't consistent with their complaints and rude. There has been give and take with every generation of the sims (and I still play 2, 3, and 4 regularly) and the supposed lack of depth for the snow isnt a huge deal for me. I dont mind that they seem to try and cater to lower end computers even though I have a beast of one that can even properly handle sims 3. Instead of constantly complaining about sims 4, I bought it at release, played it about 5 hours and realized it wasnt the generation for me until about September last year (I was never able to play without toddlers). I think they've done a fantastic job with the improvements and now have it in my rotational play.
I will gladly take "less depth in the snow" if it means that my sims still have great activities to do, and fall and winter are my favorite seasons.
All of the sims generations offer something different to me gameplay wise, and gameplay is more important to me than perfect graphics, even though I play on Ultra. (Though this is simply MY personal preference)