Been playing since Dec 2015. Here is my feedback... some of this should be easy to implement, while others will probably be out of scope (but possible maybe with a DLC later):
General:
There should be an option to keep the Survival Tab open at all times. Holding down Tab is too annoying, especially since Shift+Tab opens the Steam Overlay so you can't run and monitor your stats at the same time.
It should not be possible to search containers when it's dark.