Great game, brutally rewarding.
I would imagine this is planned but if not, digging for worms or reaching into trees for grubs etc. for bait would be much appreciated. Similarly using guts from butchery would be another realistic suggestion to improve the hunter-gatherer symbiosis.
Another potentially interesting addition would be the option to throw groundbait into fishing water. Pushing offcuts or specifically crafted bait into the water would increase likelihood of catching specific fish for a certain time, likely limited by type of groundbait and type of water.
Again, a great game, excited to see where it goes.