I think Bitcoin will stabilise around $15,000 but the dynamics of the platform have to change before Altcoins start to develop a better platform and increase their share of the market. It's only a matter of time unless Bitcoin changes and adapts to new technological advances then it's crown might begin to slip. Don't get me wrong Bitcoin is the daddy of all Crypto's but the fees and transaction times are going to become the proverbial weights that start to drag it down so it needs to change its model to survive as the cryptocurrencies main coin. 

Looking forward to seeing some advancements and hope 2018, will be just as good for BTC as the previous year. BTC