well if that would to happen then the hunger bar should lower at slower rate or you would be dead before accomplishing anything. And about the wall they should make it where you cant build onto a structure but have to create your own structure. kinda like pre made huts you can add too. That would make it a lot more fair and not allow people to be selfish with item spawn locations, when it comes to the predatory animals honestly I haven't ran into any yet I usually stick to the cities I know eventually i will because I plan on making a safe haven in he middle of the woods on a server so players can be safe and can trade for supplies.