Shame I cannot make your life financially richer as well. Hey ho. Some things are beyond me.

You guys sound up for some experimentation, so try playing around with these ideas.
When considering how to use our bodies to create beautiful sounds at the piano, that sustaining pedal is our biggest friend; it allows us to play without needing constant contact with the keys. This frees up our arms.
My students describe me as 'stroking' and 'caressing the keys'. They are right - that is exactly what I do. This comes from the freedom of arm movement that I have, courtesy of that pedal.
Place your fingers on the keys and then take all the weight off your hands. The muscles of your upper arms will hold them in place. Your elbows, wrists and knuckles only do just enough work to stop your hands falling off the keyboard. Play a few random chords, using the techniques you have discovered to bring out the melody on top. Stroke into the keys and then out again, loosing contact with the keys - think stroking a cat, perhaps - and using the pedal to create the legato.
You will be using the weight or your arm to enhance the tone you are creating. Applying this to the Beethoven, you can release the melody note as soon as the pedal has caught it. Keep a light, 'floaty' arm as you play and you can use the extra weight of your arm to enhance the movements your are already using.
Bar 2 demands that you hold the melody note with your finger because of the harmony change on the second beat. Imagine the freedom you have in bar 3 though; to be able to release the C Eb Ab Bb melody notes makes it so much easier to make the next one sing.
Now try being
really bold. Chopin described the middle finger as the melody finger; this makes sense as it is the longest one. Try the F minor section starting at bar 17. Play all the RH melody notes (apart from the really quick ones) with your middle finger. Use the weight of your arm to control the sound (stroke that cat again

) and the pedal to create the legato. The effect is magical when you get it right. You might not want to play the passage this way all the time - that depends on the speed at which you play the movement.
How much difference all this makes to your tone at the start depends on a variety of factors: how quickly the movements can become natural; how well you can listen to your own playing and discern the differences; how good your instrument is - these differences are more and more significant the better your piano is.
What you are doing when you start thinking about all this is entering a sound world that is fabulous and beautiful, and that we pianists can spend a lifetime enhancing. Free up your body and your mind and harness them to create the beauty you crave. Have fun.
Steve
