Tsk! Before thinking of providing additional contents with DLCs, Paradox should aim to provide a quality product on release. I am very concerned about the dumbing down of the series to appease mainstream users. For example, I have heard that crossbows and spears will NOT be modeled in the game - something that bothers me because my character was supposed to hunt down Nazis with crossbows and spears. Plus, what's with this idea of not having health and stamina stats for every individual soldier?!? Stamina should be modeled and affect, for instance, the ability of a soldier to aim properly or sprint for cover. And every soldier should have SKILLS, Paradox. Aiming, reloading, sneaking, mine disposal, that sort of things. Are we supposed to believe that every soldier was absolutely identical to every other one? Clearly, we're going to have a broken product on release - and they're already talking of DLCs we're supposed to PAY for? Tsk indeed!
I agree. Each soldier should be a simulated human being who has influence on the outcome of the war. That way you will be prouder when you see your soldiers advance up the ranks and eventually join your general staff, you will feel proud about his accomplishments and progress, he will feel like a real character with a beating heart (which should be simulated "under the hood" alongside all other health parameters - functioning of internal organs is a factor in soldier's performance (so the blood pressure, pulse, lung capacity and whatever else need to be addressed), there should be a chance of having a soldier with a serious disease, illness or genetic disability that affects his ability to carry out his tasks).
You should be able to also affect your soldiers on the grander scale by issuing decrees on their health, hygiene, standards and such to control their bad habits, force more physical exercise, give them some rest (with a low chance of them gaining the "Lazy" trait) from time to time (the rest function would need to be less grander in scale, perhaps lay off squad-by-squad so you don't end up sending your whole division to the sleeping quarters in middle of a battle by accident and instead can slowly replenish the stamina of your soldiers bit by bit), prevent diseases, illnesses and such (ex. forbid sexual contact during service) etc.
But to make this even better, the families, relatives and friends of those soldiers need to be simulated as well so there is something they can go back home to. The families would also have an affect on the country itself, because if their men die enmasse, they could start revolting and increase dissent with their unhappiness on military's inability of preventing major casualties. Plus, the families should affect the soldiers - ex. a relative dying should result in other relatives sending letters to the soldier and informing him of the bad news at home, perhaps having the soldier ask for a leave or discharge to attend to his home (so mistreatment of people at home could result in massive leaves/discharges from service, even going as far as deserting if they are denied) and mourn the loss, or simply result in a major morale loss for the servicemen.