I would like to discuss about nationality in the game. I will make some proposals, but really I don't especially "want" them in the game - or more accurately they are at the bottom list of my wishlist, as they can be self-enforced fairly easily, and the developers don't have a lot of time to make this sort of change.
I believe RoP does not incitate you to keep different nationalities in separate armies, at it should, for two reasons :
A. There is no malus in most cases in mixing nationalities.
Supposedly, mixing nationalities in a stack increases the CP cost. This works well in BoA with its limited number of leaders, but not at all in RoP, because you can get rid of this modifier :
- By adding ONE leader of the "wrong" nationality, even though you have maybe 50 elements of said nationality.
- By combining elements of the "wrong"nationality in ANY brigade - the malus just disappears.
B. There is an advantage in having extremely mixed armies.
Apart from this non-existing CP issue, the only "main" impact of nationality is replacements. In many games, a player will be short on replacements for some nationalities (say : Prussian) and very long on replacements for another nationality (say : English). Thus, a good way to make sure the "consumption" of replacements is balanced and don't have this sort of gap is to mix different nationalities in a given column, and even in brigades.
The final result is that if you want to optimise your army, you will want to have very multinational armies / brigades. In any case, even without being gamey, you will never have a problem with multinational armies : you will always find the leaders needed. It is a problem IMHO as really multinational armies were rare and worked poorly (and still do).
I believe the following proposals could "solve" the issue and enhance the game :
- No multinational Brigades, except leaders with the International traits.
- More leaders with the International traits, for instance by all those dudes who start with a multinational brigade (there are several)
- Multinational armies have a malus which they cannot get rid of, except International leader. This malus can be (dunno which one would be best, and the percentage are for indication only) :
a. A flat 10% malus (like the malus you have when out of command) per additionnal nationality, up to 35% (cumulative with the normal out of command malus, but still not beyond 35%) or
b. An increase of 20% of the global CP needed by the stack, or
c. Lower chance of activation for all the leaders in the stack ("In what language is this map ? "And what sort of ammo do these English canons really need ?")
- Units with 0 command cost (including leaders) would not be concerned by those rules
- The nationality of the units in an (international) brigade are not considered when verifying whether the column have different nationalities or not).
- If we are extreme about this, mixing different langages could be even worse.
This would change the balance of the map :
- On the Bohemian / Austrian front, the Austrian would have more troubles organising his forces
- On the Rhineland / Hannover front, the Prussian would have slightly more difficulties in organising his forces
- On the Eastern Prussian front, no change.
- On the Nordic Front, the Austrian player will have an horrible time with his 50% imperial / 50% Swedish force. Throwing a couple international leaders up there could be good. The Prussian player would have a little more difficulty when trying an early Swedish KO, due to the coordination needed between the Prussian / Hannoverian / Braunschwicg forces.
- Making Ferdinand a 3-star leader would be much, much more tempting.
Overall, the balance would be a little less in favor of the Austrians, and the early Prussian blietzkrieg could be more difficult to slow down / stop.
In my next games, if my opponents accept, I will try to enforce a no multinational brigade / no multinational columns rule.
What are your inputs on these proposals ?

They all perish in winter.

I also sent Russian commander to command French troops near Kasel. After having some battles, in the battle report all French elements shown as green units(Russian units). You thought they were all Russian, but No way I have the chance to bring Russians there 