Hi. This thread was started here: http://feedback.arma3.com/view.php?id=14417
Sonic557 asked me to create new ticket to better explain the problem. So please read carefuly before voting.
There are currently 3 ways to freelook in vehicle by moving mouse. I'm talking about situations when you don't own trackir or any steering wheel/joystick. First is by pressing and holding default "Alt". Second option is toggling freelook by pressing "2xAlt". Third option is enabling "Vehicle Freelook" in game options menu. By default vehicle freelook is disabled in game options here: http://img707.imageshack.us/img707/1041/pj12.jpg
While first option is commonly used in infantry and air, second option (toggling freelook) is often used by some players in land and sea vehicles. It's because it is much easier to drive that kind of vehicles by keyboard, leaving at the same time mouse available for freelook. Third option is I believe for people who own joystick or steering wheel, so they can use both their mouse and other controller to drive/fly and look around both at the same time. If not, correct me because I don't own neither steering wheel or joystick.
Now. Since I said above that I don't own steering wheel or joystick 3rd option (enabling freelook in game options menu) seems useless for me. I don't want to toggle freelook (2xAlt) everytime I sit in land or sea vehicle. I don't use mouse to drive car or boat, I use my keyboard like in any other game, which allows me to drive and look around at the same time. I want to use however mouse to fly planes and helicopters. Currently enable freelook for vehicles in game options enables it for all kind of vehicles, additionaly you can't disable it later in game by pressing alt. This makes driving cars and boats much more comfortable, but flying helicopters or planes impossible. My suggestion is to change the option "Vehicle Freelook" from "Enable/Disable" to this:
Freelook:
*drop down menu here*
Land/boats: Enable/Disable
Planes: Enable/Disable
Helicopters: Enable/Disable
Submarine: Enable/Disable
This way players who drive cars/boats by keyboard will be avilable to avoid pressing 2xAlt everytime they sit in vehicle. Notice that freelook in Arma3 is by default enabled for passengers already and it is much more comfortable and natural for them to not press "2xAlt" to enable to look around.