That's a very interesting thought mate. I am headed to bed right now as it's pretty late where I am but I will read the article tomorrow and get back to you :) In the meantime, I guess I would say that I think PoS is much better than PoW but Cryptocurrencies are a very new technology so I would be very surprised if the best method has even been invented yet. I'll take a proper look tomorrow though and get back to you.