Sadly, working as designed.
The intent is to get players to pay those 720 gems to buyout that Diamond chest instead of throwing it away. It’s a monetization tactic, which isn’t going to change as this pressure is a core monetization mechanism of the game.
It won’t. It’s “punishment” for failing to have/spend a key or not buying out the chest with Gems. Losing a Diamond chest like that is supposed to be that painful so that the player remembers that pain. I personally went through that last night and then again already today (when I had two diamonds chests drop within three fights and to throw away the second one).
Aren’t you at Chapter 8, from your other post? Level up Northelm to increase your treasure chest capacity. I’m trying to get through Chapter 5 to even unlock the capability to upgrade the followers past level 3.
Won’t happen. I’m surprised that Daily Deal resets are allowed here in any capacity, when they are not allowed at all in GoW. Double surprised that the reset is not locked behind Crowns, which would lock the reset behind paid currency purchases. Paying for the reset with Gems, which F2P players can earn and then spend, is about as much of a compromise as F2P players are likely going to receive on the matter.