More stuff, for more chance of people spend real money on it, what you guys waiting for?
Just joking. now lets go 
--------------------------------Gadget slot -----------------------------------------------
Disarm kit : Allow the soldier to disarm mines and TNT. ( 1 Silver )
Mine detector and Disarm kit (tier 2 mine disarm kit) : (Allow the soldier to detect mines before hit by it) press 8 to use it , 50% more recoil of the weapon, may be possible to hit something whit a pistol. and impossible to hit something whit a Bolt action rifle. ( 2 Silver )
pliers: 100% more faster to cut barbed wire. (Good choice for assaulters) ( 1 Bronze )
Pilger’s and Barbed Wire ( Tier 2 Wire tools ) : Allow Any soldier to place Barbed wire and build it. only one barbed per soldier. ( 2 Bronze )
heavy leather coat : Allow you receive less damage from fire 50% does’ not protect against direct flame from flamethrower . (Ideal for flame troopers) ( 3 Bronze )
Gas mask and heavy leather coat ( tier 2 flame gear) : Press 8 to place a Gas mask, like binoculars, immune to phosphorus grenades. difficult vision -50 percent less stamina regeneration. ( 2 Silver )
binocular (already in game) : The same only give you more vision. ( 1 Bronze )
Grapping hook and binoculars (Tier 2 scout gear) : Allow to climb to roof of buildings. ( 2 Silver )
Radio bigger antenna : Reduces in 20% cooldown of radio man arty. -5 percent walking speed. radioman carry this item ( 2 Silver )
---------------------------------Supply Slot ----------------------------------------------------
Ammo Bag : Allow resupply one magazine, only trooper carry this item ( 2 Bronze )
Big Ammo Bag ( Tier 2 ammo supply option ) : Allow to resupply all ammo, only troopers can use this item.
( 4 Bronze )
Pain killers : Allow the soldier to support more stability when attacked. 40% more stability for 30 seconds. press H to use like water flask. ( 1 Silver )
blood bag : Allow the medic to carry more 5 medicine. Only Medic item. ( 2 Bronze )
blood bag and surgery tools (Tier 2 Medic extra gear ): Allow the medic to carry 10 medical stacks and heal 25%, stack whit perks. Only medic item ( 1 Silver )
Extra Materials : Allow the engineer to carry some more resources, replaces the more resources perk. only Engineer carry this item ( 2 Bronze )
Extra Materials and Tools ( Tier 2 engineers supplement ) : Allow to repair vehicles and stationary guns at cost of resources. only engineers carry this item ( 1 Silver )
---------------------------------Armor Slot ---------------------------------------------------
Helmet : Allow to receive less splash damage for explosives 35% ( 2 Bronze )
Helmet and Body Armor (Tier 2 armor) Allow to receive 20% less damage from pistols AND SMG,s. does not work in high caliber weapons such has Bolt action rifles and LMG,s. ( 4 Silver )
-------------------------------Thick about this brainstorm---------------------------------------
this is a Brainstorm, some items above may be not good ideas at all, but its shown that we might get something new, and stop using only binoculars AND water flasks. giving more options for both supply slot and Gadget slot. For time to time its interesting press the same key. Because otherwise good ideas will die in this forum.
cheers.