Resource bank(s) with 10% interest on the hour

Having three resource banks - one specifically for gold, one specifically for elixir, and one specifically for dark elixir - to hold and increase resource by 10% every hr. I think having a bank for each resource or one bank that will work with all three resources and do this would be very helpful to everyone. Destroying this would not count toward getting resource for attacker. But you would have to put in an initial amount to get started.

I wish real banks were this generous. Real banks usually give less than 1%, per year
10% per hour is beyond extreme. By the time someone wakes up (from a 8 hour sleep), their resource would have doubled if it's compounded hourly. I'm not sure what is the storage capacity, but SC is generally against the idea of being able to hide your resources too