After running the jewel dragon sea alot to level up my cards, I've notice that running difficult, its kinda a waste of time and extra energy. While the drop on the gold chest is a little bit higher than normal, however the brown chest drop is horrible. My brown chest drop is always better on normal. Several times I've gotten more 5* on normal than difficult and a lot faster to add. I don't even bother with difficult anymore because of this.
If I can offer some advice on this, take out the 4* on difficult and replace it with a 5* level 5 or something. I'm sure people would agree with me when this would make the difficult map a little more valuable.
Also, while I'm suggesting stuff, a sound effect when my card's ability becomes available would be great. You got a sound effect for everything else, why not when my shooter's are ready?
Please think about the things I said, it would really make my gaming much more enjoyable! Thank you.