I think in terms of pure gameplay this one was one of my favorite games this jam!
I actually think that even though the game looks like a Fire Emblem style game, it actually ends up being more like a puzzle game to me (due to the enemies dying in one hit). I found myself trying my best to optimize my abilities to get the most actions done in one turn. I think it is a good decision to allow such an open ability system where you can do so much in one turn.
I found all of the abilities to be useful in their own way, and was able to use them to get just a little bit more of an advantage each turn.
I think one thing that would be a simple but very effective motivator for me would be if there was some kind of "par time". I found myself performing a lot of optimizations, but would end up winning with plenty of time left. I think that leaving a good amount of tolerance is the right decision btw. However, a par time would allow people who like optimizing things something really fun to go for.