Of late i've not had many rendering issues.
However last night, I scoped in and had just the grey square in the middle of a fire fight with two people. Luckily I was quick enough to switch to 3rd person and kill them off.
There's 'quality of life' improvements in my view.
Lock items to a particular inventory space, so it stops them moving around and having to hunt for them.
The combat/kitchen/hunting knife doesn't seem to stay in the assault boots when switching too and from, appears randomly within the inventory
Hold two items at once? For more combing recipes...
No leg style holsters?
When crouched or prone, you should be able to hold your breath for longer.
I've likely forgotten some I had though of recently, but I feel these are the main ones..