With the last update to DayZ on consoles we've received a good change to the sensitivity options, and I believe it was definitely a step in the right direction. However, there are a couple issues that some people may not notice consciously, but it makes aiming far inferior or other shooters.
The first issue is the big one: The deadzone is axial, not radial. What this means is the area around where the analog stick starts to respond is a square, rather than a circle. This creates an issue when trying to make subtle movements with the analog stick, particularly when moving it even slightly diagonally. The vast majority of modern fps/tps games use a radial deadzone, as it offers much more control of the stick. I think most players may not know about this problem specifically, but I know everyone feels it. This is the main reason aiming feels off compared to other shooters. This change specifically is a must.
The next change is of a similar topic, but more of a QOL improvement than a necessary one. That is, allowing the player to change the deadzone. Again, comparing DayZ to the majority of fps/tps games, the deadzone is generally too high. However, this is subjective, and some may prefer the larger deadzone (whether they're used to it or they have controller drift). Either way, I think quite a few players would enjoy this option. But again, it's more of a QOL improvement than the first change which I feel is necessary.