My prediction for 2018 is a continued and sustained growth for the Cryptocurrency market as you see the Market cap pass $2.2 trillion. This will be the year Cryptocurrencies are mainstream, everyone will begin to know the Market, not just that Bitcoin virtual internet money. With the market cap exceeding $2.2 trillion, it will lead to some very large growth for the Cryptocurrency market including Bitcoin. As it begins to go more mainstream, I am predicting Bitcoin/Bitcoin Cash dominance heads up to the 75-80% range by the end of 2018, as the majority joining the market won't have a lot of knowledge yet.
A 75% dominance in a $2.2 trillion dollar market cap would put Bitcoin at a price of $130,000 by the end of 2018. It also leaves the rest of the CryptoCurrency market with a $550 billion dollar market cap. I extrapolated a few of the top coins below, if they stayed put in terms of percentages, which I'm sure they won't, but it should give us a semblance of the marketplace. I am leaving off Bitcoin Cash because I am not sure what will happen with Segwit2x.
Ethereum: $1600
Ripple: $1.35
Litecoin: $280
Neo: $135
Iota: $2.20
Steem: $3.25
There's a chance this growth is conservative if the Chinese market comes back. If that does happen you will also see Neo surge into the top 5.
Let me know your thoughts.