I love the ability to combine items in my inventory, as they allow for me to save space and feel more secure with a full stock of items. I've been able to make great use of this with ammo, but for whatever reason, I can't do it with:
- Water bottles/canteens
- Water purifiers
There may be others, but I know that these for sure won't stack with each other. I would love to be able to carry a full stack of all these items, but I'm forced to pick the largest that I can find, which is almost never full.