Just an idea, but maybe it could be more seamless if we hold RMB and move the mouse in a radial menu to select the element. It could take some time to get used to, but it would free up the movement a lot, and we don't have to slow the game down for this. Element placement could be more intuitive if the counter element is always next to the countered element.
Get rid of the utility element thing I would say, just have a potion with limited usage. I feel it's an unneeded layer of complexity to an already complex game.
