Your insights about Cryptocurrency mining is superb. All the knowledge that you have provided this is showing that this person is very familiar with crypto mining. Yes, steem Token can't be mined traditionally. You have explained very well about role of witnesses in mining of Steem token that is not traditionally. 20 plus 1 witnessed produce blocks. Stake holders play an important role in achieving these steem tokens. Wow , it's good that you are indulge in the mining of Bitcoin. Intitialy bitcoin mining was very popular. When it's popularity increase then other Cryptocurrency adopted this mining.

You have explained all the benefits of mining along with it's importance. And no doubt mining has to face several challenges. But overall good job from your side. Good luck for the contest.