Wayne wrote:
"And can also reach in and change things as needed (read as: create miracles)."

But a god, a deity, does not require that. If it does it becomes just the equivalent to the statement: "What is technically more advanced looks like magic." Your god is reduced to a 23rd century trickster whose gotten bored or lost the knack.

And it is no more likely that someone in the future would use the ability for good than it is that they would use to to buy stock or bet on horses after they knew the outcome.

DA Morgan