It is really hard to get CE, if you don't want to pay money or a ton of crowns, but mist energy refills every day. The problem is, mist energy only goes up to 100, and you need a lot more to make waepons and things. That's why I think we need:
An Energy Bank.
You can trade in your mist energy for crystal energy at a rate of 4:1 or 5:1. Then, It would be a lot easier to get energy, and on days you don't play, it wouldn't be like you're wasting energy, because you can just trade it in.
Please reply what you think.
If you are not gonna play, crafting and selling something popular may get you better results.
And converting mist to crystal is bad idea, specially with multiple accounts users.