Nice, tooltips would be great.
It would be cool to be able to click and drag a path on multiple tiles and indicate if you want troops to stop on a tile. Either that or make it easier to cancel a tiles movement arrow, maybe right click or something. Or maybe the path fades away after a minute.
For units I think adding a rock paper scissors element could be nice so cavalry and larger bonuses against each other. Right now it was not too clear I really needed to specify what to make because I could just overwhelm the enemy. Maybe a unit that fast captures could be cool. Also a way to toggle unit production.
Some of this might be in there and I might not have noticed.