> leave a larger coin to [...] go quicker It'll go quicker, but it won't save space! Unless we make smaller half dollars, just as the gold colored dollar coins

> leave a larger coin to [...] go quicker It'll go quicker, but it won't save space! Unless we make smaller half dollars, just as the gold colored dollar coins took over after the large dollar coins we had previously. Perhaps something with a diameter similar to a nickel but a thickness similar to a penny or quarter.