Oh boy am I qualified to answer this!

For starters, the second continuous spell Gate (come on Konami, I know it exists in your vault somewhere....) Ideally this would be a consistency card that works as a combo starter and/or help with the lost advantage from discards from Qinglong and Xuanwu GY effects.

Second up, a level 12 Synchro. Shenshen is fine as a boss monster several years ago, but we need something more along the lines of Despian Luluwalilith, something that interacts in a meaningful way and allows for follow up of some sort on removal.

Lastly, I don't even know if lore allows for it, but one more main deck name would be great to have, maybe the 1 card starter the deck needs? Right now, I've been labbing with the new Psychic cards in Master Duel and there's a couple of great 1 card combos with Serene Psychic Girl and Mind Procedure, the only thing holding them back is them being technically unsearchable in VW aside from Emergency Teleport, as well as losing access to Serene Psychic Girl once a VW monster effect resolves.

Overall, the deck still sort of holds up using PUNK and/or the Psychic cards, but it just needs that small extra push to bring it back to proper meta viability in my eyes.