Idea for SG Lux skin "upgrade" - A "Star Princess" skin exclusive for Lux

This would make reference to how Sailor Moon has upgraded (in a sense) to new forms throughout the series, with SG Lux transforming into a new, more powerful form as a result of some huge threat. Her new form, Star Princess, would let her turn the tide of the Star Guardians' battle (or something along those lines).

Obviously the Star Princess skin would be purely cosmetic in terms of gameplay, but it'd allow for an opportunity to give Lux a Legendary-class skin for the SG line. Hey, they did it for Star Princess -> Star Queen Li-Ming in Heroes of the Storm; I don't see why Riot can't do something similar.