As a real life hunter, the ranger type character is my preferred play style, so much of this mod really appeals to me.
I like the idea of quests, possibly for legendary animals in the extreme wilds, bounties for a nuisance bear or wolves attacking livestock. Tournaments with other hunters would be cool. Maybe the Bannered Mare is low on meat and needs some venison. Sabrecat in the basemant.

Just throwing ideas out there.
A guild devoted to hunters would be great. I think the perfect spot to set up shop would be The Drunken Huntsman in Whiterun. It's already a shop specializing in hunting and archery gear, but not just that, it's a tavern! What better place to sit around the fire and tell tall tales of your expeditions across Skyrim. The Bosmer brothers, Anoriath and Elrindir could be the first members. Half the work is already done! A basemant could easily be added for sleeping quarters and target practice.
Separate factions is an interesting idea. It seems there are different kinds of hunters already in Skyrim. The hunters you encounter in the wild clearly state they are poaching, whereas Anoriath hunts and sells his game right in the Whiterun market. Some type of ranger faction enforcing the Jarl's laws in the wilds would be great. One cool thing from the mod OOO in Oblivion were the Imperial Foresters you would come across in some of the most remote locations of Cyrodil.
The adjusted pelt prices are welcome. I used a mod that made them higher, but they were raised too much. Yours are just about right.
The perks I'm not real keen on. I assume the changes to the perk trees would make this incompatible with other mods that change perks or perk trees, like Duke Patrick's Combat mod that also makes changes to the archery tree. That would be a deal breaker for me. If they were implemented as powers or spells it would be golden. Or possibly make the perk changes modular. I think maintaining compatibility with realism mods, like Frostfall or Imp's More Complex Needs is essential, but it doesn't seem this would touch upon anything they do. I guess I just don't really like the idea of doing more damage to animals or taking less damage from them. In RL, if I practice and improve my skill with a bow I guarantee I could do as much damage to a human as an animal. The base perks already cover speed, accuracy, and power. I just don't understand why improvement in archery would mean I'd do more damage to an elk than a Dunmer unless the perks represent the knowledge of vital areas of creatures, but then again that's fairly universal.
Anyway, great start and I'll definitely be tracking this mod. Thanks!