I'd love a Blood elf lux.

The most recent patch skins looked very World of Warcrafty. Varus looked like a night elf, Gragas looked like a Dwarf, Ryze a human mage and Braum the Paladin. It made me think that if they made some skins to look more like the Horde side, they could include a Blood Elf lux.

Her spells could have a green shade to resemble warlock fel magic. Would hearken to those who want a dark lux, and be a pretty unique skin idea. :P