Please add more ways to use gold. I think there should also be better ways to get charms. I recommend having basic and advanced charms available for gold.
Packs should be unlocked with level or crystal (anything but gold). The VIP system is kind of ridiculous, and if the VIP system stays in play, the amount of gold required to go up a VIP rank should be reduced
I love the new update, thanks developers. One bug I found is a card in 6.1 (i forget the name) that has 2500 attack, and no abilities. The description of the card is jibberish/a language I can't recognize.
A few versions stopped working when minimized but AFAIK the latest version works now!