I know this is far fetch and will never happen because Shyvana is not "mainstream" but you know, she has not gotten a skin since 2016 (and yes I know so has many other champions, in other words, Riot diversify please).
An ultimate skin in which Shyvana skin changes throughout the game based on the next dragon spawn. So a skin for Water, Wind, Fire, Earth, and then finally Elder. It would be so amazing. And also frankly they could do a rework for other champs that have a dragon slayer skin, such as Pantheon and Swain, where their skin changes based on the dragon they killed, giving true meaning to dragon slayer.
What do you all think?