First the Obvious, better AI, make Stalingrad great again, rework the BR system, Increased silver gained after battle, fix grey area camping by increasing map size maybe.
Secondly, add more melee options for variety e.g machetes, different knife types. Add binoculars that can zoom that you would unlock later in the game, add more backpacks maybe mixed versions e.g grenade+ammo backpack, also more free customization options, add more grenades, upgrade to the flask, more mine types.
Thirdly, rework the squad system where you can create your own and name them and give them a custom logo, but the max number of units is 9, with certain units costing more than one space, you could also give them 1 or 2 buildable weapons that they can choose for engineers to build, you can keep the base squad system and give them certain perks or abilities to entice them to use them instead of just using custom made squads, buff premium squads also. also make shotguns secondary weapons for every class and add more pistols.
Fourthly, add new and upgrade units types, for new ones, you could add observers(observers carry rifles or auto weapons, their purpose is to mark enemies using a unique version of the binoculars, that can zoom up to 4x. Observers can mark enemies with more marking types like the number of soldiers and what types they are, successfully marking the enemy can give 20-40 exp, and to prevent spamming of this ability, once you selected a enemy, if you deselect and select any of the enemies in that squad it wont give you exp), Marines(they use auto weapons, and their ability is to spawn anywhere there is a beach), light armored vehicles(used for anti infantry, only 1-2 can be used at a time). And upgrades to unit types without them like medics, add medics 2 and 3 same with mortar men, apc drivers, flamethrowers, etc. add more apc vehicles aswell.
Finally, add more maps, more game modes, more countries to play as. also gives us custom backgrounds and more music in the lobbies.
