actually not being able to transmute hero stat cards before you maxed that stat on the hero ensures, that whales cant just buy hero chests and transmute cards for whatever hero they get to push the hero they like.
At least they can transmute something. I have 7+ rows of useless cards. Whales dont need to transmute anything. I can send you screens on pm so you can see for yourself the astonishing ammount of left over card/points and other stuff they get.