-2 United
-2 Gravekeeper's Servant
-2 Vampire Dragon

+3 Pyramid Turtle
+1 Book of Life

+15 cards in side lol

Since you run Veilers , cyber dragons you could add BLS.
I'm still sure that DAD is staple in this deck ( easy access , easy grave control).
I would add +2 goblin zombies , +2 Zombie master , plague ( synchros ofc - gaia knight / brd / scrap ) , +1 Allure , +1 Burial.
You should definetly add +1 Lavalval Chain , you should take out gk servants , united we stand's , vamire dragon's.

Don't go Goblin Zombie if you don't have Torrentials. And why add lv5's to your hand when you can straight up summon them! Goblin Zombie also isn't that great in this deck without significantly taking up more space with level 4's.

So tempted just to post my own xD

Take out Vampire Dragons
Cyber Dragon? the deck runs perfectly fine without it
+2 Zombie Master (the card is too good not to run at 3)
+2/3 Goblin Zombie
+1/2 Pyramid Turtle

Try out Transtarn for a spell it's really good in the deck xD
And add a card like Lightning Vortex or Dark Grepher to drop dead cards from your hand, and to help set up your grave xD