I don't like the weight system, who is with me?
Let's say you have 199.50 pounds of weight and your max limit to carry is 200. You pick up a glass bottle that weighs .50 pounds and all a sudden you are encumbered. Or let's say you picked a few flowers and then maxed your weight limit, I don't care how much weight you carry in real life, you will never become encumbered by a flower. Also there is perks that allow you to lower the weight limit from items, that doesn't even make sense you can't make something weigh less.
They should of implemented a 3D stacking inventory system like from Resident Evil 4. Also a 3D stacking inventory system for containers would be nice too, I don't see how anyone can fit a minigun in a tiny suitcase or anything smaller.