Ok good news. With the help of some other members of this forum I've managed to figure out a working business model. So I'm pleased to announce that I can offer bitcoin denominated savings with 1% annual rate minimum. This will be extremely low risk investments. Unfortunately, I cannot offer the instant access to capital, but rather interest will be added weekly.
Stay tuned, the site should be up in a few weeks. Let me know what you think, I'm really keen on gathering as much user feedback as possible. If you don't like the idea, or think it won't work for some reason, and I should especially focus on something (such as trust), please share your opinions.