You are basically saying that all decks in Standard need to be crappy because they might boost an already strong deck in Wild. That makes no sense at all. Wild isn’t the way it is by way of anything devs have done.
It is the way it is because all of the previous expansions best cards wind up there.
Wild will always be busted and trying to fix that will only rotate which class is the most powerful. You would have to ban cards to balance Wild and I doubt that will happen as a ton of players would quit.