The Model 3 does pretty good in snow, but not as well as other AWD cars. I think too much power goes to the rear axle and I'm concerned the regenerative braking can cause a spin.
I think Tesla needs to create "Snow Mode" AWD driving mode and make it easy to activate "Snow Mode". Snow Mode would have power going 50-50 to front/rear, limit regenerative braking, limit acceleration, and perhaps some other features. The car can ask to go in "Snow Mode" when starting to drive if outside temps are below 40 degrees? You can easily get outside temps from the car location.