Leviathan Aurelion Sol
Okay, I know a skin for him just came out, however I personally am unsatisfied with it. Battlecast would have made more sense than mecha, seeing as too how Aurelion Sol could be taken as a bad guy, or a vengeful champion. ANYWAYS, here is the idea for Leviathan Aurelion Sol
Super detailed Levithan, you look up any picture, imagine it cooler and more detailed and boom that's his skin. Q- Shadowy Whirlpool, the whirlpool spins faster the bigger it gets, and when it hits a certain size, wreckage can be seen floating in the spinning waters, such as wood or broken ship parts. W- Instead of stars, instead make these random pieces or debris. Broken wood and pieces of sails and other objects that change whenever they hit something. E- I know this entire thing is flying over terrain.... however what if he "flew' under it all. Imagine a shadowy leviathan shaped figure moving under the Rift creating a dark whirlpool. R- The shout would instead be a ghostly image of the skin itself, moving in the straight line similar to the E "shadow under the water" however when the shout reaches the point of knocking into outer limit, the shadow knocks the water up and pushes them back.
This could also have in game interactions with the entire "Sea Hunter, Corsair" skin line, as well as have an in game interaction with Pyke. Something along the lines of when he kills him, "I've seen bigger fish" or something corny.
Let me know what you think about this