So I finally see that the "tactics" perks should be implemented/fixed.
I launch the game, and discover the pre-battle orders/placement perk has been removed completely instead of being implemented.
What a disappointment. It doesn't make sense to me to see my men and the formations all over the place on top of each other at the start of every single battle. It is not just immersion breaking, it is more cumbersome and annoying to fix during the actual battle.
Also it is already in place for sieges, I have literally no idea as of why it can't be done during map battles.