Satoshi, bitcoin is extremely volatile and run by organizations now, not the people. There's constant forks such as Bitcoin Cash and other garbage that shows just how jokey the coin is. The only thing worthwhile is the blockchain itself and I honestly believe this was not meant to function as a method of payment, but as a method of storage(Bitcoin's constant dramatic price changes, good and bad, show this)
My resolution? Dump all your bitcoins on the biggest exchanges and destroy the currency, then start over.
If satoshi did not came forward with the scaling debate and many other forks that have been attempted in the past then I think it is safe to say he is never going to come back or to do anything with his coins, while I'm speculating I think he just moved on with his life, he did what he wanted and leaved when he thought it was the right time, he is probably doing something completely different and probably more stimulating to his mind.