The problem is the decks that are currently cheating out Ghalta, Stampede Tyrant and crew are doing it more efficiently
Miller today is eloquent in describing the intricacies involved in designing a card game such as Magic. A game design veteran who eventually found his way to Magic parent Wizards of the Coast, Millers path wasnt direct, and included time spent as a prison guard
In each game, these formats have a relatively limited card pool, but that makes it easier to choose which cards to use, and that makes the format beginner-friendly for both games
Surrounding the opening of new packs, there is of course a lot of meta-progression that you can choose to participate in or not
Crystrons were so good for so long, they have 4 different cards from their core on the Semi-Limited list
Embrace the meta Despite the number of possible card combinations in Master Duel, you'll find that there are a lot of similar decks in platinum rank