It would also be grand if they allowed substitute ingredients for certain recipes. This would be very useful for the glamour prism recipes, and recipes that require certain fish. Say toad leather or silver ingots are super expensive, there could be the additional option to make prisms with a different type of leather or gsm ingot. Would also help to increase demand for certain materials that may only be used in certain recipes that no one uses (including the currently useless 1.0 materials).