Everybody who bought a D3 need to keep in mind that Bitmain did not force you to buy a D3. Everybody had an equal opportunity to do their own research, and make their own decisions. It's not Bitmains fault that the network difficulty skyrocketed so much. They saw an opportunity to create a new miner for a new algo, and the made enough to fit the demand. They did a good job. People who bought the first batch of D3s either broke even or may have even made a small profit. If you did some research you would notice that the D3, while affordable, were already not as efficient as other miners in the market (A5). If you have mining experience under your belt, you would know that buying a D3 would not work out in the long haul when something more than twice as efficient is available. If you did realize this, you bought the D3 hoping to get into the marker before the network difficulty skyrocketed, meaning that you managed to get their first batch or (possibly) second batch, and had the opportunity to make a profit before too many people were able to join in.
If I walked into your house and begged you to sell me your toaster and offered you $2699, and you were under pressure to make as a profit, would you not sell it to me? At the time of sale it seems like a win win. I am happy that I have a new toaster, and you are happy you made a huge profit.
Bitmain could of simply decided to only sell half as many Antminer D3s as they did just to prevent the network difficulty from skyrocketing, but they would be taking a huge financial loss, and disappointing tons of customers that lined up to buy the D3.
Take this as a lesson learned the hard way. Mining has risk associated with it. Nothing is guaranteed, otherwise everybody and their grandma would be doing it.
I know I may make many people upset with this post, but I feel that people have to take responsibility for their actions and stop blaming Bitmain. Bitmain is only guilty of delivering what was in demand. They probably saw this coming, but they cannot assume responsibility for the network effects. They can only supply our demand.
Of course they could do thing better like shipping PSUs on time with the Antminers if they were bought together, or stop supporting a cryptocurrency aimed at centralization (BCH) but there is always room for improvement.
tl;dr = Take responsibility for your actions and stop blaming Bitmain for network effects. If you didn't know that the Dash network difficulty was going to skyrocket, you didn't do enough research before you purchased.[/quote]AAAAAAAMEN!!!!
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Scammers never forces to do something, because they are scammers other wise they will be grabber or something like this.
So scammer is scammer and bitmain is a scammer company.
Why you can't combine them ? 
i feel mostly left out 