Konami really needs to get into printing multiple high rarity versions of cards and of more cards in a set, while printing more copies of stuff at base rarity. It let's the game be expensive for people who want it to be expensive and cheap for people who want it to be cheap. Unfortunately even with handtraps being reprinted there's multiple 100$/piece staples in format like droplets and pot of prosperity, and half of decks want to play the brave engine right now which is like 400$+ or something like that.
Edit: Also they should steal the "meta deck in a box" concept from Pokemon here