You've changed the mechanics around the war a few times and here's my feedback
Although I preferred the way it was with all the districtds we had to conquer, with different amount of fights to win in order to conquer them, I understand it would have been a LOT of work if it stayed that way and I'll just get used to the current menu, hoping you don't change it up too much again ahaha
Now to the fighting mechanic which is imo the most important part of my feedback as it directly impacts everyone's experience in this part of the game. I'll come out straight and say it : I do not like the current mechanic, with the dice, like at all. It relies too much on rng and although the little animation for each round is pretty cool I just can't like it. I don't find it fun. I do however really like what you did with the possibility to use a power in each round depending on your roll, that's the good part of the current system.
I miss having to spend time in the dungeon with each of the girls after fighting them in order to add them to my team, then having to change support character between each district I targetted to go along with the type of enemy and strategy needed. Although this system quickly became too easy I do think it could have made for a cool way to input a cool strategy like for example the eldritch changing types mid fight forcing you to either adapt through their phases or having to cheese it with food to heal yourself until you can beat them with one specific type of attack. But thinking about it, it was probably too much work again, after all this isn't the main game but simply a mini-game, I do have to reiterate though that I REALLY do not like the current system and hope to see it improve so that I don't have to go through it. It's kind of sad to use auto win feature so i'd rather not use it.