Ideas for Gameplay Improvement

I've never posted here before, but I was curious if any DayZ veterans would think these ideas would improve the game. (I have about 70+ hours in-game). Here is my list of ideas, any feedback would be appreciated.

Weapons:

1. A larger-caliber rifle (like a 300. Win Mag) should be added. Spawns would be the same for other hunting-style rifles like the Tundra and Savanna, but would be much more rare. The bonus of this gun is that it would be able to penetrate plate carriers in any condition from almost any distance and kill in one shot.

2. Weapons carried on the shoulder should need slings to be carried. It seems much more realistic to need slings for weapons. they would have a high chance of spawning on the gun, but could also be crafted out of rope, animal pelts, etc... there would be 2 types: leather hunting slings, tactical slings, and improvised slings.

3. Compound bows and recurve bows should be added. they would use standard crossbow bolts and function similarly to crossbows.

4. The BK-133 should be able to be sawed off.

5. Humvee wrecks and drive-able Humvees should have a chance of spawning a HMG mount, which could carry either an M-249 S.A.W. or an M2HB 50. cal. ammo for both would spawn in ammo boxes in military areas.

Vehicles:

1. Drive-able Humvees should allow players to access the roof hatch and mount their weapons in the turret ring. wrecks and other Humvees could spawn machine gun mounts with armor plates to provide additional protection.

2. Spark plugs should automatically spawn in drive-able vehicles in a full set of 4 or 6, depending on the car. most cars have 4 or 6 cylinder engines, which would require more than 1 spark plug. they could still be removed to prevent other players from taking your car.

3. Humvees and Trucks should run on diesel instead of gasoline. Gas stations would have Diesel pumps for fueling, and jerrycans could spawn with diesel as well.

4. Repairing car engines should be able to work with wrenches, screwdrivers, pliers, etc...

Equipment:

1. Clothing should be able to be layered. ex: Raincoat over a hoodie or jacket.

2. When you swap clothes, an animation could show your character putting on the clothing, like putting on a jacket, helmet, or boots.

3. AA batteries could be added for use in smaller items, such as gun sights. Most sights wouldn't realistically take a 9-V battery.

4. Press vests could spawn in black as well as blue.

5. An american style M-1 helmet should be added

6. helmets with covers should have the option to insert plant materiel in them, allowing for better camouflage while wearing a helmet.

There's probably many more i'm not thinking of, but here are some bigger ones i had been thinking about.