Very interesting proposal. It seems to me that this gives you a tunable parameter (the 0.1%) that trades off optimisation and risk. For instance, you can bet the best WBE abvisor won't optimise the universe, but it could very well give you a strategy that causes a catastrophic market crash, civil wars, or some other undesired outcome (while setting you up to profit from it). The more improbable you allow the result to be, the more effective the advice, but the greater the chance of an unexpected unwanted outcome.