Boring Dragons

What the difference between each of the elemental dragons? (Not including the Elder Dragon) Color/skin, the buff they give and (after some research) some stat and attack differences. But you fight them just the same, no difference to engage. nothing to dodge

Here's a thought:

Cloud Drake: Every 8 seconds, Cloud drakes blows smoke in a cone infront of it, lowering vision range. (not so bad right?)

Infernal Drake: Every 8 seconds, Infernal drake creates a pillar of flame (like Brand's W can be seen and dodged)

Mountain Drake: Every 8 seconds, Mountain drake throws a rock at the nearest enemy champion, stunning them for 3 secs.

Ocean Drake: Every 8 seconds, Ocean Drake creates a water wall, blocking incoming spells and lowering ranged damage.

Any opinions?

EDIT: I know that they have attack difference, just saying the Engagement should be more interesting, more than just right click and spam abilities until dead .