Building suggestion: the Bought Treasury (plus suggestion to Clan Castle Treasury)
As widely known, current treasury has an inconvience such that if you choose to collect resources from it, you have to collect all resources at once. This suggestion has a new building suggestion (the Bought Treasury) and a modification to the treasury system.
The Bought Treasury is a building, however not considered as a resource building, because no resources can be stolen from it. It can be built at the beginning of the game, costs 500 gems to build, and can hold 100 million gold, 100 million elixir, and 1 million dark elixir. Resources bought in the shop, either via the "treasure" section or special offer packs, are stored in the Bought Treasury rather than the storages.
Spending resources (for example, upgrading a building) can be re-worked like this. You don't collect resources from the Treasury or Bought Treasury. They are spent when you try to spend resources.
For example, if you upgrade a building which costs 8000000 gold, and you have 7000000 gold in your storages and at least 1000000 in your Treasury, you'll be informed:
"Upgrade this building with 7000000 gold in your storages and 1000000 gold in your treasury?"
If you have 6000000 gold in your storages, 1000000 in your Treasury and at least 1000000 in your Bought Treasury, you'll be informed:
"Upgrade this building with 6000000 gold in your storages, 1000000 gold in your Treasury, and 1000000 gold in your Bought Treasury?"
If you have 5000000 gold in your storages, 1000000 in your Treasury and 1000000 in your Bought Treasury, you'll be informed:
"You're still missing 1000000 gold even with all the gold in your storages, Treasury and Bought Treasury. Buy the missing 1000000 gold with 600 gems?"
Spending resources in storages take priority, then the Treasury, and finally the Bought Treasury.
If the Bought Treasury is full, the excess resources you buy will fill the Treasury, and if the Treasury is also full, then the storages(can exceed maximum capacity). However, the Treasury and the storages are lootable.