Dragging the pieces is definetly a little buggy as of right now, but we couldn't get it to work better than this for the current version of the game (we'll work on it if this gets updated though :D)
We are also planning on having all the units have some sort of introductory explanation on how it can be applied, although we want to have the players themselves discover more complex mechanics (we also might guide players towards some advanced mechanisms in the form of special challenges which give you specific units to use)
I feel like there's a ton of stuff that could be done with this idea as a whole, so we'll likely give the game a bit of post-jam love, we're glad you enjoyed it! :)
Thank you for the review!! <3