One thing I’ve not seen in the wilderness is ski tracks. I’m not sure how simple it is to model NPC hunters and adventurers to ski around, given their tendency to circle and wander around.
Foreign traders and Njerp parties, when sleighs&sleds(&carts) get added should use them and then your Finn, ahem, could trade/profit...
^Tracking skill check on ski tracks should reveal to direction of travel, where Looking at them wouldn’t necessarily. Also if there’s been heavy travel on the trail, or single skier. (Multiple ski stick marks, plenty of short ski kicks. Hoof prints for carts/sleighs.
On established trail*, fatigue should be lowered vs ploughing through fresh thigh deep snowdrifts.
Also, any tracks before snow, should be fully covered (removed) with snowfall.
And fresh tracks should imprint better/clearer after rain. So the spring shower wouldn’t really hinder stalker-tracker efforts on staying on a fresh trail.
*ski or foot trails in snow.
Question is, is all the additional work, worth the end result? LOL