I'm still not using it although I would like because I modded the units of a certain faction, also changing units to new ones, which I would have to change manually in the pack files all the time. I will wait for more results. Will you tone down missile damage? Instead I'm using now a version of the Cinematic Combat mod (it's removed from the Net seemingly) with toned down hit chance or a version of Mester's animation battle mod with increased hit chances, because they don't change the land units files. If the enemy has some armored high tier units (like Carthage in every army) I also lose battles because most of my armies consist of medium tier units which are frequently also rather naked (the modded ones).
I'm not sure wether I like the new disband mechanic. I never ever build experience or other upgrade buildings which would make my units better at recruiting, I only use battle experience and two champions despite of the imperium level. It's a bit harsh to lose long trained units totally. Isn't it a instigation to build unit upgrade buildings?
I appreciate the huge efforts to make battles more difficult, must be so time consuming to change all the stats. However battle difficulty can be handled in different ways. Trying to get very difficult battles for players using very good armored elite units all the time (like middle to late game Roma players, frankly said also the normal later Roman units are a kind of armored elite which they also were in reality) is a very tedious task I fear. Perhaps some fantasy should be left to the player to get a satisfying experience.