Well, I may as well put this out on the table, then. Because the Synchros are generic, the deck itself can function without relying wholly on the Mayakashi... Who, really, are here to help get Yuki-Onna out onto the board.
3/5 synchros, 4/6 main deck monsters, 2/3 spells, both traps and 1/2 link monsters. Your ratio is either half or more than half of every type of Mayakashi, leaving you needing very little expansion room.
This is what I
didn't want people to do, as it's still extremely easy to play this like a straight Mayakashi deck. Add to that extremely powerful staples like Call of the Haunted, Evacuation Device, D Prison, Foolish and Allure and I don't think the one Violet crystal really balances things out. The card choices on display here are pretty boring and don't nearly take advantage of the vast card ocean Yugioh has to offer, with most stuff being either well-known or relatively recent (~1,5 generations).
I don't really like the deck, I'm gonna say. You've the chance to run something like Red-Eyes Zombie dragon, Archfiend Zombie-Skull, Revived King Ha-Des or Doomkaiser Dragon (+ assault mode) if you want to go synchro zombies, but are skipping over that in favor of just running what's essentially pure mayakashi retrofit to have the illusion of not being a Mayakashi deck.
EDIT: Also, while not relevant to the critique here, for anyone else reading: If anyone has any opinions on anybody's decks, including my own, feel free to share them. If someone goes
at some of my own card choices, for example, I'm willing to debate you on the matter and change up my own stuff. Lord knows LunarStandard talked me out of quite a few poor choices back in DT.