I had the same feeling about the rewards cards... There is a serious glut and it is damaging the economy. I made a suggestion of a card burn option to try and break down the sell walls at 0.02 usd. The post is around 5 days old, I won't link drop unless you ask for it.
I'm glad someone else found it hard to rank up... I was stuck in silver for ages and only managed to break into gold on the last day... But then I only play the daily quests and nothing more...
Nymph for me, I still can level that one!
No worries, I've already found and read your post. I also noticed no reaction can from either of them.
I think the card-burning feature might be a good idea, but since it will cost @steemmonsters money, I wouldn't count on it happening...
Ah well, it will cost them a little bit of money in the short term... but the alternative is a dysfunctional marketplace which will bring the game down!