I hate to start another thread on waxing chains, but one topic I've never seen addressed is the cassette and chain rings.

After washing my bike and reapplying oil to the chain, I've always made sure the cassette and chainrings got a fine coating of oil to prevent the risk of surface rust. I'm ready to clean my drivetrain and install a new, freshly waxed chain. Do I need to do anything to the gears?

If not (out of curiosity), have I been wasting my time in the past ensuring they received a fine coat of oil after degreasing?