1. Regarding formations vanilla had a neat feat that has long been gone and I´ve missed it since. Selecting several diverse units in an specific order then press single line the units forms into a single line in the exact order that they where selected in. As now the AI seem to "group" them together.
Ex. If I want to create a sinle line like this: Triarii, Principie, tirarii the line will probably look like TTP or PTT but with vanilla and I choosed the units like this: TPT they would form up in a line as TPT.

2. A hold formation command should always mean hold formation. As it is now when a unit gets engaged from the side it will start rotating towards the agressor. This is specially annoying when you have a line of spears/ phalanxes and an enemy unit marches up towards unit A but just before engaging unit A it turns and engaging unit B. Unit B now will rotate towards the enemy thus exposing its flank. A line formation put on hold formation command should be static.

3. Same thing with the phalanx formation plus that they break up into an obscure mass of individual soldiers. Breaking a phalanx´ formation is only about mass. A single phalanx unit will hold formation against another unit but faced with several units pushing towards it it should succumb.
Is it just me or does anyone else agree that a cavalry charge head on into a phalanx unit should not be able to break it?! As for now the cavalries easily penetrates a phalanx or spear unit and a head on charge will only cause minor casualities to the cavalry unit - it´s just ridiculous!