I understand it takes a lot of work to make this game, so this is in no way a critique. Just observations from my life in the bush.
A. Friction Fire, there are typically 2 types of friction fire people use in North America. I think the game could really work with this mechanic. Perhaps only Level 5 fire skill could be able to do it.
#1 is the bow drill method, which requires special parts. You need a hearth & a spindle (usually from certain woods like cedar), a bow (just a hard stick with an angle in it), a bearing block (tricky to find, but bone will work and certain stones), cordage (often breaks), and plenty of stamina. This produces an ember, or as we like to say in bushcraft, a coal. You must have a tinder bundle to turn it into fire. You normally can't get friction fire from an even moderately damp hearth & spindle.
#2 is the hand drill method, which only requires a hearth and a spindle and tinder bundle. However, the wood must be absolutely dry - I cure mine a couple of days in the sun.
B. Respawn Plants/Fungi: rosehips & reishi every 365 days, birch and maple saplings every 800 days. If the world were completely dead, then there would be no prey, and you'd be dead, too. So it's kind of illogical that the organics can't respawn.
C. Backpack Damage: Replace with Roycroft pack with a tumpline or Bedroll/Blanket Roll pack when completely broken. I've carried gear using the blanket roll pack in the past, and it works well but doesn't let you bring a lot of gear.
D. Banking Fires: You should be able to cover your embers with dirt to keep the coals going even without fuel. This does a few things. It creates charcoal that you can use as fuel, and it allows you to reignite the fire with just a tinder bundle.
E. Dakota Fire Pit: You can light fires in the wind. It requires some serious prep work, though. You've gotta dig a U shaped tunnel in the ground.
F. Ignite Fires with Electricity Arcs from the Aurora. You can light fires with electricity. Happens all the time unfortunately.
I guess I'll keep updating this as a go along in the game. There's stuff also stuff like like skis and snowshoes that could be added. Non-potable snow is really hilarious to me. Gather non-potable water from freshwater ice fishing holes... but really the thought that I could only make fire with a magnifying glass if I had no matches or firesteel, that's absolutely terrifying to me.