"Would the table benefit from a professional refurbish?
Depends-how much, and what's involved? If the service is a DeoxIT, and a check for leaky caps, that's something you can do yourself.
If they're *very* experienced with this particular model, and can reference future trouble areas that should be addressed, it might be worth a go. If not, and since it's working great, I'd just clean/look/enjoy.
Those are great looking decks, btw. Congrats.