I am usually harsh as far as settings go. I play with most of the features ON for realism and challenge. However there is a setting that I really find unrealistic in this era: the activation rule. I believe the last two options ("not being able to move at all" and "veteran rule") are ok in principle, but do not serve their purpose well for 15-days turns in 20th century warfare.
I don't have a problem with having some of my Generals locked in place when inactive, but this is happening way too often to be of realism. I have tried this with all three alliances and most of the times it is almost impossible to re-iterate the historical pace of certain units. If the turns were week-long or perhaps (better!) this percentage of happening lower, it would have been ok, but right now it is ruining realism.
I suggest we cut down the probability of having the Generals locked in place to half. After all, they should already be inactive in that turn, the extra penalty (locking them!) should be really low. In principle, it is ok for this happening now and then, but it happens really too often.