Nice post and gives a good understanding on difficulty and how block rewards may influence hashrate.
The higher the price the more miners will jump in, it is all simply a risk reward sum miners do and indeed the idea of longterm potential.
I suppose in that sense the sentiment of miners could also explain the sentiment of the rest of the market?
I wrote a post about BCH and BTC today if you fancy reading it, it is the top post in my account. cheers.