Well I have be posting about this nicehash problem for sometime now,these miners have no incentive to hold since fees need paid so they dump eating up buy orders for whatever price they can get,this is reason price crashes and difficulty increases but seems only us loyal miners can see this,I regularly see pool xyz advertising his nicehash port and I used to mine there till he started looking for nicehash miners,greed is a terrible thing and destroys great projects,we are not alone in this problem there are many other coins been damaged by this behaviour and left with sky high difficulty and low price after they dump
I completely get and respect what you are saying about Nicehash miners disrupting the BitcoinZ environment. But I think we are stuck with them.
The community is working hard to promote the coin and attract attention. Some of that attention is going to be from people who want to make a quick buck. In my opinion, that is OK because it gets the BitcoinZ name out there. Everyone who makes a few dollars will remember BitcoinZ, will monitor its performance, and will probably help drive the price upwards again in the future.
Nicehash miners will come and go as the price rises and falls. Those of us with a hodl strategy simply must hope that the long term price trend is positive and that those who sold during the recent price spike wish they had held onto their coins instead of selling for a quick profit.