Skins that NEED to happen

Pastafarian Vel'koz

Baker Pantheon

Mutant/Living Weapon Jinx http://en.m.wikipedia.org/wiki/Random_(comics)

Sherwood Forest Varus - A male version of Robin Hood, Ashe has the female version.

Sherwood Forest WuKong - as Little John

Sherwood Forest Gragas - as Friar Tuck

Edit: missed some

blood moon diana

Taylor Swift Lux Lisa Ann Sona Goku Ezreal

THIS: http://boards.na.leagueoflegends.com/en/c/skin-champion-concepts/ElagBgEG-brick-man-zac

Sailor Moon Lux.

Id give my firstborn for zookeeper yorick

Hentai Vel'Koz... oh wait...