So, what do you think? Is this too much intervention or not enough?
I think I definitely need to revisit the processing on this image.

I like the slight boost in saturation plus local contrast, as you have done. The peripherals were softened a bit in the original, but I agree could be pushed more.
The difficulty, for me, was to retain the suggestion of soft falling snow yet avoid a muddy composition. A little "sparkle" suggests the flakes, and helps refine the composition.
Thank you, eob, for posting those adjustments for comparison! It gives me good direction for trying to balance those elements in a way that I couldn't quite see before.