The chests are pretty barren for loot and I never can get enough healing to comeback from a kill. I don't really mind about the armour being weak, and I understand that a tiering system may be hard to do because you would have to go through each individual chest on all maps to decide which chests are 1s, 2s, and maybe even 3s depending on the loot. But I think there should be some sort of random tiering to avoid going through all of the maps; meaning one game a chest would be tier 1, and then the next game that same chest could be a tier 2. Or just add more healing/gold.
It's intended for things to not be easily available. it's a "Survival Game", and ultra hard core! Luck and skills in finding items and crafting what you need are keys in this game. Also the air drop always have very good stuff.