On the topic of trees if ya can't grow them will ya be able to replant them? giving them a life span and maybe having them regrow after dying is an option too. Having the dropped fruits becoming new trees would be too hard to program i reckon.
Also will there be consumable batteries for the suit like you have water bottles and oxygen?
I shoulda added this to the post as well however it'd be nice if there was a clearer difference between the ore n the scrap to show you cant pick up ore with your bare paws. Maybe some cracks in the ground to make it look buried as a hint you need the shovel.