Riot youre joking right?

It's probably a bit hard to make a skin for her. Considering most of the skins are based off common generic ideas or movie/game/whatever references, Illaoi is probably a bit too outlandish for mainstream tropes. Idk.

http://nexus.leagueoflegends.com/2017/05/dev-state-of-skins/

"I feel like we’re tackling some major pain points this year and feel confident committing to you that you will be receiving skins for Cassiopeia, Viktor, Yorick, Illaoi (and more) over the next 12 months. We know there are others you would add to that list; they are likely on our list as well."