Thanks for the feedback! It's all great! Most of the things you pointed out here are simply not in the game due to scope; though if I do make any updates I'll be sure to add them! All great ideas!
On your sprinting comment, that's a game design decision I made on purpose. If you stand still you regain it very quickly, walk you regain it slowly, and if you're scavenging you don't regain it at all. This forces you to manage your stamina properly and is quite fun with some of the later monsters!
Anyway, great feedback; really appreciate it!