I like tactics games a lot, and this was fun to explore :)
There is a lot of clean up/quality of life changes you can do here. For example, UI indicating movement range, walking back and forth shouldn't be 2 moves but just refund your moves count etc. More interesting characters and moves are of course would be most interesting, but then again it's a jam game so lack of content is somewhat expected.
But excited to see how you would continue developing this!