I’d recommend adding a small animation of an X if you click on a space where you can’t move. I clicked on a few spots where I expected something to happen and there was no response.
I like the formation visualization. It would be nice if I could drag the icons within the formation screen to rearrange them there - it would feel more intuitive.
RTwP (real-time with pause) reminds me a lot of early Black Isle games like Baldur’s Gate.