Hello, I will only give my opinion.

I know that looking to level up cards is good, I would implement this for lands, but not for battles, people with skills should be able to have this little advantage. Also, renting higher level cards will always be more expensive.

Yes, I love that there are merits now in the chests.

I do not like the idea that DEC is replaced by SPS, in any case, I would like both to stay and be distributed, example probabilities:

20% DEC
20% SPS
20% CARDS
20% Potions
20% Merits