More idea, i ask my friend again about the most important thing in survival and of course its food. My suggestion:
1. Well this maybe too much detail but please add decaying system for item (food). It maybe not very important but if you add this i'm sure , a lot of player that already try other surviving games will pick their thumbs up for you! "It's real surviving games, let's try!"
2. Other detail, first i want to ask: is there any river on this map? if is it yes, please make it walkable and please add some wave on this river. So if this river have a heavy water/wave, your hero will be dragged away by the water and your friends should work together to save you, it can be done by throw a robe (using shackles ability that drag someone) or something else. Also when you walk on river , set a invisible dummy unit that cast slow, because when you walk on water you weight is increasing.
3. my suggestion also add more advantage and disadvantage to other character. Add advantage like example: villager, advantage: cooking experience is better than the other so it has 40% chance to create "super delicious" dish/meal. or worgen, advantage : blessed with wolf-like feet so it movement speed is maximum, or pandaren, advantage : his fat body has chance to reduce damage more than the other.
4. i forgot about your features but i think you should add cooking spell/skill. a set of simple trigger is available on thehelper.net forum. if you already add it, sorry didn't noticed. Add also fishing features (sorry if i didn't noticed), all of this stuff maybe too much detail but i think this is the important part.
5. when it night, please reduce the vision to the very minimum. In this case, the hero must cut the tree, create a stick (this stick can be upgrade to be walking stick so there wont be so much item), and burn the stick to become a torch. You should add attachment (torch model) and i recommend the torch on this website. It will be more challenging if you lock the camera
5. as i say that food is important key to survive, please add more food resource, not only base on meat but maybe something else. Add something like fishing, fruit from tree, vegetable (i think i'd read "garden" features), and honey. It is important because honey has a lot of glucosa and support our body. Maybe you should ask modeler to create honey nest model and make it model of unit that flying and place it near tree. If you right click on it, you will attacked by bees unless you burn something , well it depends on you.
I'm sorry i just got only a few ideas, i'll ask my friend tommorow and post the new idea