I have an idea regarding your excellent game.

You could add a new option in the tower settings, similar to the existing option for targeting specific enemies. Under this option, you could add the priority mode to focus on enemies that the tower is most effective against. For example, just like some turrets already indicate which enemies they are most effective against, you could add an option where they focus only on those enemies. For instance, the Cannon is good against Yellow triangles but weak against Red squares, so it would be great to set it to target triangles instead of squares, leaving the squares for the snipers. This feature would be extremely useful during automated waves where different types of enemies appear.

If you'd like to delve deeper into this idea, contact me.