So many quality posts here. I tried replying... I spent like 20 minutes writing a great post and it was only for one of the many points raised here. So I deleted it and thought to reply in titles:
-Bigtea47 is right to bring it up. When you are used in spending 1 credit for 150k perhaps, now getting half of it sounds devastating and it truly is.
-Haron is again right asking for credits value change. We will reserve it for future. It could help perhaps.
-We kind of like the black market, for some reasons. If we were to ever remove the Send Credits options (which is a possibility) then it would not be for this reason.
-The idea to turn cards market into a stock market is great. Sadly, it will encourage cheating.
-Danik is right; in fact, we expected credits demand to be higher. This signifies a flaw in the credits where we need to improve their necessity. Mostly for established players. Newcomers already have more than enough uses for them. This alone could solve a lot.
-All SHM points are valid from my perspective.
Changing the credits exchange is not the way to go in my opinion. It was a tough decision to take when we took it. Changing it now, so little time after, would be a bad idea. It may take time but they will work again. Banks can be upgraded to meet the requirements for credits. Sure is that gold and credits are now tied whereas they weren't before and this creates extra headaches for all.
The more power the players have to resolve these headaches, the better for the game. Even if sales drop.