It's a good idea, but should be implemented by the pool. Otherwise, you're basically operating a bitcoin bank and we all know how that story ends. I know I personally have no interest in holding onto other people's bitcoins. I'd rather they just paid me when they had the funds and were ready to order to avoid all the headaches of running a bank.
Hi, and thanks for your input.
The amount of BTC I am holding at each given time is minimal - as soon as a coin/bar can be bought by the savings plan, the BTC will be transferred from to my own personal (the store's) wallet, the metals are from that point on property of the customer.
Each customer will get their own adress and wallet, even if my payment processor gets hacked, the intruders will have to rob every wallet individually.
The reason I am posting this plan is to gauge interest in providing this. If a pool were to set this up via the two of us, fine - but I'd rather be in control of most of the process. If I cannot tell the users' balances, I am not able to get them their stuff at the moment the price is right. I cannot estimate what kind of inventory needs to be restocked beforehand, etc etc.