Where's the love for Zac?

It's been nearly two years since this guys release, and yet there are still no new skins for him? Really? How come Braum and Vel'Koz get new skins before Zac, who was released before both of them? It just feels so bad to have a champ out for two years with no new skins, and the one skin he does have is extremely lackluster. I know that Riot has said the stretching and all that stuff makes it extremely hard to make skins for Zac, but at this point, I just feel like he's unloved...