meat disproportionate to size of animal
Change meat received from hunting to be proportional to size of animal, both for normal meat and the newer high quality variant. For example, a chamois or wolf should not be able to give the same amount of meat as a buffalo (often 7 for both the former and only 7 for the latter). Further, a baby deer or rabbit shouldn't give as much specialty meat (in quantity) as a bear. With the current overdistribution of specialty meat, a hunter in both forest and desert biomes need not be concerned with non-meat foods once he/she builds a drying rack and has hunted baby deer, wolves, cougars, chamois, hyena, and/or rabbits for about fifteen minutes.
I would suggest classifying the huntable fauna in 4 groups: small, medium, large, and megafauna. Double both normal and specialty meat amount ranges with each class size increase. For example, both kinds of meat distributions could be scaled as: 1-2 for small, 2-4 for medium, 4-8 for large, and 8 to 16 for mega.
I agree, and this links in to the general over-abundance of meat, and the knock-on lack of difficulty in the food-related survival aspects. All these animals yield so much meat (even without upgraded knives) to entirely remove the food/hunger system as a challenge in the game.