@RiverSong I am sorry but we can’t speed up the rate at which new updates arrive on iOS. This is handled by Apple. For some reason it’s just a bit slower 
@Khelios This likely won’t get removed (the download all assets) as when new content releases this can be a helpful way to ensure they are all downloaded. Otherwise, sometimes your game might not completely DL everything and you’ll have something missing or see an error message.
@Jainus Stone Blocks can only be removed
If we want to continue updating the game, the dynamics of the core activities are going to change.
Answered in here
Battles and Rewards
Standard Battle Rewards such as Gold and Souls are given for completing Battles in Quests and Delves. The Rewards will separate in the Rewards list after a battle is completed however they are added to the same resource: For example, Gold and Delve Gold and the same.
The Underworld functions differently to Krystara. I can see where that expectation makes sense but it’s not designed to be the same. Soul Gnome drop rates differ, like the other Gnomes. 
@Jainus RE treasure/Troops
@athos Depending on the level of Delve Chest you open, you can obtain less Rewards. Higher level Delve Chests have a higher chance at giving a larger Reward. Like chests in Krystara it is still based on chance though.
@turintuor As Actreal said. They don’t function like things from Krystara. Naming conventions which are similar will cause confusion.
@en9nhcet Sorry, underworld resources are restricted to the Underworld 