Aero uses Air magic purely for support/mobility and lightning for damage.
But something like Air blade and Static shield, some of the most common spells to be used in fantasy setting, are not present.
And Hydro only uses water for healing. There's no way to shoot a waterbomb, explode your enemies out of the way with a geyser on a wet surface or create waves of water to push enemies out of the way. you're just shooting ice.
There are quite a few useful spell concept missing here and there, especially those that heavily utilize the environment and not just use it to go from oil -> Fire or Water -> shocking water.