Obviously will need to play it to see how it works, but I'm glad they are trying out new implementations to address feedback.
Changing camp settings is also great.
Is that only for shortrest ? Not sure I understood well. Long rest at camp with food supply + short rest everywhere with a background depending your location ?
No mention of Short Rest being changed.
For Long Rest - yes, visually it'll reflect where you are now (i.e. if you're in underdark, camp looks like underdark). Not sure how many permutations that is though - i.e. if I rest in the Goblin camp, do I get a goblin camp rest location? Or do I get a generic surface world camp?
Food (well he said "supply") is now required to do a long rest. If you don't have enough food, you don't recover 100% of your spells (and HP? I think I heard that).