"And finally to your point about investing in the game, I think you are missing the bigger picture. Right now we are super small in the world, a tiny spec that almost everyone in the world is unaware of. One day that might change. If it does, then there's no way that every player will have every card. This will change the way everyone things about all the cards."

This would be cool, we will see if it happens.
But the generell question is:

We have in the moment 477 cards in the game, isn't it enough for the moment ?
We really need more cards ?
We need to burn every day Chaos Legion-Packs instead of just relax a bit and sell them a little bit longer ?
IMO the experience show that they will be sold without burning them, ok it will take a bit longer but where is the problem ?

We need now 43 new reward cards and we can even not let reach the old cards their print limit ?
477 is not enough - It must now be 520 an soon probably 600 ?

What human player should be able to manage such a ton of cards ?

and the last question: Why their was no proposal for this new reward cards ? When they tell that the community can decide about important changes why they could not decide if it will be changed in this way ?