Arclight

I feel more Arc light skins would be fun and on certain characters it would extremely cool for example:

Garen This skin would make him look like a bad ass paladin and he already has the right look for the part so he would be able to take demacia to a holy ~~new level ; ) .

**Kha'zix ** This might just be me but Kha'zix could look super cool with yellow burning eye's and bright blessed blades and golden radiating wings,He could also just have a unique skin to other void champions.

Hecarim All the blue on hecarim could become a blinding Fiery array of Holy flames running enemys down with rigorous glory take the battle field as the four lagged Justice bringer.

Feel free to think of more to comment but yes you'd guess the basic idea.