So, Riot made the Champion Mastery cost BE, because BE was kinda useless. Yes you could craft championshards, but I don't know a single person who crafted even single 1 champion with BE. Everyone just rerolled the Shards. And then there were the people who already owned all champions, so for them BE was even less usefull. So the Mastery System was tied to BE, so there was a use for BE. But now, since BE replaced IP, BE isn't useless anymore. So why do we need to still pay BE for Champion Masteries?