This to me just dicourages people from taking a chance at higher leagues. It's incredibly expensive to bring all your cards up to the next level. I had almost all my cards at silver level recently and diecided to try my hand at gold. Since I've been there I've probably spent $1500 bring a few cards up to gold. But for what if now I'm going to make silver level rewards if I don't spend another $50k to get them all there immediately.

This constant moving of the goal posts makes me want to go back to just renting out my cards instead of playing.