I Think There Should Be More To Oak And Birch Forests Than Just A Bunch Of Farm AnimalsI Think There Should Be Bears Deers And Moose Including Different Types Of Birds Including Chickadees Also You Should Be Able To Get Fur From The Bears And Deers And Make Fur Armour (Yes Similar To Leather )And Also You Can Get Meat From These Animals.
Furthermore. I Think You Need More Detail. If You Had More Detail I Think I Would Support This. Except The Fur Armor Because That Encourages Animal Cruelty. Everything Else Sounds Good But Needs Explanation. We Cannot Read Your Mind.
Just because the OP doesn't put his thoughts on paper doesn't mean the rest of us have to go around without any in our own heads. If there are holes in his proposal, fill them with real-world concepts and go from there. It's literally what Mojang does, and 9 times out of 10 the proposal isn't likely to be any different...but it sure would be interesting if deer were carnivores bent on clearing the night skies by suffocating phantoms with their farts (no need to actually put fart sounds into Minecraft, just recycle the squid suffocation noise and use that).