I'm not a liberty to discuss the risks of this service to me until a Terms of Service is fully developed. I've worded the OP to specifically guide you away from considering the how/whats/whys/when of this plan. I have a schedule of risks and costs that I'm working from. What I don't know is how much something like this is generally worth. From that information though, I can judge it if will be equitable to pursue establishing this kind of service.

But seriously, I'd really like you to consider the fantasy that, from your perspective, no Bitcoins would ever be lost. What would it be worth on a yearly term?