Battle lines and formation

[NetoD20]

So, I came here to ask if is it possible to insert the following modification:
When you press both mouse buttons on the map while having a group of battalions selected, the game allows you to rearrange your units in lines, Spear on front, Sword in the middle, and archers behind. But it doesn't seem to make much sense to me that Cavalry is put on the front, ahead of the Spear even. Can this be changed so Cavalry is dropped behind in the rear of the battle formation rearragement?

Also, and I guess this is impossible or very difficult, but would it be possible to explore the idea of introducing new possible formation options? Right now I don't know what this formations could be, the lines of Spear<Sword<Archer seem to be fitting (apart from the Cavalry problem I mentioned above) but I guess this could be a good tool to tinker with

[hoho96]

A Triplex Acies sort of formation would be sweet. Though it's probably not possible at all to change such functions :/

[NetoD20]

Not even to put the cavalry in the rear? : (

[Adrigabbro]

I wish too it was possible to add more formations in the game... but I'm afraid the engine doesn't allow it.