Coming in as the 11th most played Zac, my boy Zac is dying for a new skin. He is in need of a skin that is better than just a color change, poor zac mains even when you own all his skins you go to select what skin you want to use and it feels like your choosing between green zac, purple zac, blue zac, red zac, orange zac, yellow zac, or pink zac... Maybe it is hard to make skins for this champ, but why not do something challenging? It seems like theres an endless amount of good ideas for zac skins out there already and that its just a matter of picking one now. I am definitely a hardcore zac main and I will play zac even through his hard times when hes not performing well compared to other champs just because I love this champ, so the least you can do Riot is give us zac fanatics another reason to keep playing. Please give us an Ultimate Zac Skin!
Every so often I look to see what other Zac fans post just to see what kind of concepts they are thinking of and so far this post by MAJÍNBUU had alot of great ideas with art images that you guys should check out.
https://boards.na.leagueoflegends.com/en/c/skin-champion-concepts/q2T26xtE-riot-can-we-get-a-zac-skin-its-been-2-years
P.S.
Off topic, I would of loved to have seen Zac's rework gone a different route where instead of changing his old Q and R abilities but instead adding options to those 2 abilities. For example, just like Elise and Nidalee have two sets of abilities depending on the form they are in you could allow Zac to have the option between his old Q or the new Q ability that he was given. Same thing goes with his R ability, his old ultimate was just so much fun that we all wish we had the option to still have it along with the new one.