After looking into a few mods and finding out how easy it was to modify the base game unit loadout i dug around though the files and ended up doing a small personal mod to rework their units to test what might make a difference without making things to over the top, after playing around with a few things this is the conclusion iv come to for the most part
Recruit: one of the things i think is going is their units don't live past the heat of battle and recruits get mowed down and re-recruited faster then the villages can pump the poor bastards out, i think a faction who revolves around shield wall tactics should be able to implement their fresh recruits into that shield wall, even if its a basic shield. This has resulted in more units surviving but the recruit still dies quite easily.
Warrior: this unit only needs some simple changes, a upgrade to some basic leather armor so it can last a bit longer along with some constancy in the shield options it gets
Soldier: basically i think it needs more of the same upgrades as the warrior, up the armor further and give it a stronger shield so it can live and get a better chance to become the stronger units
Spearman: this unit is where the love needed to really start, this unit needs some decent armor changes and a heavy round shield to match the rest of the shield wall so they can keep protected better, not sure if it should have throwing weapons but it needs to be more relevant as a tier 4 units
before the beta the shock troop and the veteran warrior were some of the best units in the army but now they are even better in beta, the devs gave them a lot of love in the armor department and they can last a lot longer
Shock Troop: as ,mentioned above i think it all around good, i think it should get some throwing weapons and a stat increase to go along with a polearm that can be used with the shield, the war razor is an awesome weapon but i think it should go on a different unit il elaborate when i get to that unit
veteran warrior:pretty solid unit i think it should get an extra set of throwing weapons other then that they are awesome
Berserker/Ulfhednar: simply put i think they need to have their sets swapped between one another, i think the berserker should be the half naked lunatic with the axe ( as it was historically) and make the Uldhednar feel like an upgrade buy giving it lots of chain armor and fixing the skills to match what the unit before it was using. It needs to feel like and upgrade and the ulfhednar as it stands in the base game is a complete downgrade
Woodsman: this unit needs a shield and it needs some basic leather armor, same theory as the warrior it needs to survive to the next phase
Hunter: Same line of thinking with armor upgrades but the archer line needs to fill a secondary role in the army, simply put they have the worst arches in the game and are surrounded by factions with vastly better range or firepower then they do. With the warrior race theme in mind and the fact that their going to be pretty close to your shield wall to pepper units on the approach i think this unit needs to get skill in polearms instead of 1H weapons and should be equipped with a basic spear
Archer: currently this unit gets better armor then the one it upgrades into, i believe it should be swapped so this one gets the lite lamellar armor and also continues with the polearm theme as i mentioned before to act as a secondary role in the army, it could also probably use an upgrade in the arrow type
Veteran Bowman: with the armor swap in mind this unit would have chainmail and would be better at taking damage, it needs bodkin arrows to be able to make the shorter range damage more relevant. I think the tier 5 unit should get a strong polearm, in my test mod i decided to do some mad science and give these guys the WarRazor that the shock troop used to have and i like the potential but it might need to be just a basic spear not sure tho but having them relevant in melee due to how close they are make them feel like a natural part of how the sturgian army should work
Brigand: Could use some better armor to get to the point where its on a horse and more useful at its potential role
Hardened brigand: there is a small stat mess up that can needs fixing other then that this unit is just a light cav that likes javs seems alright just need better AI
Horse raider: there nothing that feels out of place, it's a light cav that has a love for javelins sounds good on paper. the biggest problem with these units is the AI doesn't know how to skirmish with them or aim their javelins at things properly, once that changes I think these units will be alright.
Sturgian warrior son: same problem as other units not well enough equipped to survive or be effective, sense this is the nobility line and the son of a Boyar i think it safe to say it should be better equipped than your average recruit
Varyag: this is a nice jump in gear and stats, becomes a solid unit
Varyag Veteran: i think this unit should look more like the Druzhinnik in terms of its load out just without the horse to show the progression that the unit is going through on its way to the Boyar Cavalry
Druzhinnik/Champ: this is the unit that literally made me do this entire writeup/experiment, its Stats are AWESOME for a Boyar cav Unit, and Sturgia is much more of a Rusviking inspired faction then a purely norse based one, which pretty much tells me these guys just got overlooked on getting the bows they need to be the unit that their namesake is inspired after, they even get them as load out options in MP.
Basically the unit just needs a bow and some good arrows to go along with its shield and one handed weapons so it can act as an anti cav Unit. harass the enemy cav into rushing at you where you can horse lock them up making their lances useless and your superior one handed skill can win you the fight in close combat with them.