If a spell or ability (say, Throwing Knives) has a limited range, that range should be visible on the tactical map. At the very least, it should be visible once I click on the ability's button; I personally think it should also be visible when I hover over the button.
Also, I should be able to easily see how far units (mine and the enemy's) can move. For instance, hovering over a unit could highlight its current potential range of motion.
