By converting duplicate cards to runes, you still haven’t given the player a way to complete their collection. WTF. Side note, I’d argue that the Planeswalker upgrade system is completely arbitrary and breaks balance of many cards and should be removed, but that’s another discussion.
If I need a few cards to complete a set, I’m not going to buy dozens of fat packs that contain all duplicates that give me pointless runes that go into a pointless planeswalker leveling system.
In real life magic, I can sell my extra duplicates as singles, so I can buy singles to complete my collection. In MtgPQ, I “sell” my singles for runes that do nothing to better my collection. You’ve created pointless duplicate system that takes the user into a dead end of having infinite runes.
The poor design systems in this game continues to astound me, but hey I keep playing because the core gameplay is fun 