What needs balancing the most is faction units imo. I'd take this over any other content or balancing priorities atm.
Sturgia needs something to help their fundamentally ****ty soldiers, like higher base life than other faction units. Other than that, the stats of units for all factions should be diversified more in terms of rock,paper scissor balancing. Currently the units for each faction does not feel unique enough. Though the troops themselves for all factions are good, they need a LOT of finetuning when it comes to stats like run speed, armor, damage, weapon length etc.