I'm more weary about those scratches at the back of the neck thoughI am sure that you already know this trick Serge- but this is an excellent place to put this bit-o-knowledge for those that might not.
Lightly sand the entire backside of the neck to remove the finish and/or years of body oils (and who knows what else).
Take a damp clothe and a HOT iron, starting at the shallowest sides of the dings. Apply the iron to the clothe in short 5-10 second bursts. Most importantly- this trick is done best over the period of a week or so, because you do not want the entire neck to start absorbing water. Just the dented areas.
I have found I can get all small bumps and bruises and MOST of the major dings to lift out of Maple using this trick. My only word of caution is to not let the neck itself start absorb water.
When this is done, you can then start working up the super fine sandpaper scale- moving on to steel wool. Of course you finish out at 0000 on the wool side.
Last- apply Johnson's Paste Wax with a fine cloth. This will seal the back of the neck back up to prevent it from wanting to absorb moisture/sweat and will also be FAST to play.