Very ambitious game, I'll give it that much. I like the rotating armies idea both narratively (mostly) and in game play, and I think the amount of challenge this game offers is also mostly enjoyable, but it is pretty aggravating for some missions, especially the long ones if you lose a main character.
Writing-wise, I feel like we're always just a little bit short of being good. There are some fun ideas in just about every arc, but I never really feel like enough is done with them. It doesn't help that the rotating PoVs does make it difficult to really develop characters or plot points.
The most glaring issue with this game is the complete removal of the support system, and it's the primary reason why I'm dropping it. Supports are the main way to have any character writing whatsoever, and removing them entirely makes many units (especially new ones) feel like piles of stats more than people. I think it also throws off the pacing, not having any non-plot scenes between chapters.
Overall I think the game is fine but it's not good enough for me to really want to play it more than something else.