On the plus side, you could be very good at snowplow stops, on the ice, and in skis on the snow.
People are really going to hate this idea, and I haven't tried it
People can only see the orientation of your boots and blades, not of your feet.
So in principle, if you took boots that were too big, and padded the boots (e.g., by cutting a piece of foam, like carpet foam, to the shape you need, for each foot) so that your feet are actually pigeon toed when your boots are parallel, it would make you look like you had more turn-out. In addition, you would want the blades to be mounted along the direction of the boots, not your feet, so that they perform as though you had more turn-out too.
Problem is, the balance of your body weight over your blades would make you tend to be on your inside edge when you are on the front of your blades, and on the outside edge when you are on the back of your blades. About the only way to more or less fix that would be if you padded and laced the boots to give you a very tight fit, and re-heat-molded the boots after doing all this.
This would only give you a few degrees extra of apparent and effective turn-out. For me, Riley876's approach only gives a few extra degrees too - though it is something I never thought of trying. Combine them both, and it might possibly be enough.
But a lot of us just don't have much turn-out. Equipment can only take us so far. Flexibility will always be a big deal in figure skating, and you will probably always have some limitations.