I think the goal is just to make real separate leagues when Silver decks are competing with other Silver decks to find out who is the best Silver level player. Right now it does not make sense, Silver level players reach Gold/Diamond/Champion and Silver league is full of 1lvl decks.

If some player can afford only Bronze level deck, he will be able to compete with other Bronze level decks. Right now the only thing he can do (except tournaments) is just trying to reach as high league as possible (but it's only possible because of bots / points inflation)