With the addition of a new currency. Why not also take the opportunity to consolidate several of the special resources.
What I mean is take pearls, ice shards, fire shards, and elemental embers and make them one single currency/resource.
-help with the people short one or more of them
-simplify prize trees (no more debate over whether to include embers, or pearls)
-simplify building, particularly premium towers/structures
-simplify chest rewards (less likely to receive a resource you don’t want/need as it is now universal)
-remove three currencies that are unique to single structures
-remove possible confusion between the elemental shards outside of atlas and elemental crafting shards in atlas (probably minor)
With consolidation the payout from chests would probably need to be reviewed (likely increased), but some of our data minded members could weigh in here if they like the idea.