Crossover/Reference skins

I know there are a lot of skins based around referencing forms of entertainment and media, but what crossovers and skin creations would you guys wanna see?

Personally I want to see a crossover with Nexon's games. Mainly Maplestory and Mabinogi. I know they're not as popular anymore, but back when South Korea required Social Security Numbers of people to make accounts, over 1/3rd of South Korea had accounts. I'm kind of a fan of both the games, and once I even got to talk in a video about my opinions on the games to the president and crew of Nexon SK. Things like Kanna Karma or Phantom Twisted Fate would be really cool, and even the Black Mage in Maplestory reminds me of Malzahar! I probably have more experience with Nexon than I do with riot, but this is just me on a tangent about an old game that I'd love to see have a crossover with League like the have had crossovers with Volcaloid, Sword Art Online, and other things.

Also, I really like the skins referencing things like Gypsy Danger with Mecha Aatrox or Dragon Blade Talon referencing Strider, but my favorite reference skin in all of League has to be Super Galaxy Rumble for Tengan Toppa Gurren Lagaan and Kamina.