Though the worst balancing issues are to do with the game's turn system, there are some worries over some overpowered decks
Are Time Counters Used Anywhere Else
The notable exception, apparently, is targeting your opponents lands, which are up for grabs with zero repercussions
If I was to play a major event though, I think the three/one split would be better, as some decks cannot beat the Angel in game one, but I would play the fourth Archon in the sideboard
[ONE PIECE Card Game] Sanji (EX Gear 5 Starter Deck [ST-21] ST21-003) [Release Date/Price/Where To Buy] Sanji, the prince charming of the Straw Hat Crew, descends from the sky into the battlefield
Look for the set symbol on the bottom right of the card art box this small icon identifies which expansion the card belongs to