WE still need 1 arecade skin and 3 bosses.
I propose a Boss SInged (q would be pixelated or look like shattered data (maybe even binary code?) w can be about the same, E is a flip but can have some type of particle effect, ult can possibly give him a old dbz game type pixel effect around him.
I propose a boss urgot, because he fits a boss type look and need a bot lane one. (unless vayne.. or varus...)
the 3rd could be kass, noc or rene, aatrox vel, or maybe illaio.
the last arcade skin... well we need a midlaner.. maybe ekko, kat, or nidalee, would say ahri but popstar looks like, same for lux but star gaurdian looks like would i think arcade might be similar to.. arcade yas would be funny tho.

Obligatory Dragon Boss