Yes it really sucks and I don't understand why Splinterlands don't solve this problem. I done this suggestion already but in general you can write where you want, in their suggestion site, in discord, in hive they just don't care.

They have this site: https://feedback.splinterlands.com/

But since more than three monthes their is completely no reaction from splinterlands, to the suggestion 1551 to 1565 they didn't reacted in any way - It just seems for me that they aren't interested anymore in player feedback.

I done their 14 days ago the suggestion:

"Once a soulbound-reward-card is maxed, it will be removed from the pool of cards this player can get (can still get gold foil version if not maxed) . If all regular-foil-reward-cards are maxed the player should get only goldfoil-reward-cards and if all regular-foil & gold-foil-reward-cards are maxed out he should get another soulbound ressource (f.e. merrits, blood or power stones, potions, dec-b)."

But nobody care, nobody react, nobody seems to be interested at all !!!