I am having some serious problems with the mouse cursor in the game. it is quite inaccurate when trying to click on a tile. often some tile behind or in front of the one i clicked will be selected.
Also, there should be more visual feedback what your click is going to do. i dont like, for example, that the cursor does not look different when in the UI in tactival combat. it also should turn into a "cannot attack" icon when hovering over an enemy out of range.
Maybe you could even make it so that the tile, which is selected, get some kind of glow or marking(especially when similar unit stand next to each other).
Related to this in tactical combat, when ordering a unit to move beyond its its range of movement for that turn, it should not automaticly continue to move at the beginning of the next turn.