Apple currently have three desktop lines. It's their belief that laptops are where the profit centres are, and where the 'future' of modern computing is. Yet they have recently eliminated the 11" MBA and put the 13" MBA on life support - although we might see the 13" Air (and old model Pros which are still lingering) for the next 4 years. Going forward it would seem that the Macbook, and two sizes of Macbook Pro will be the future - three lines.
We have also seen the iPad Pro potentially eating into the low end Mac Mini areas in future - look at the speculation over a
10" iPad Pro which would appear to be replacing the iPad Air 2 and iPad Pro 9.7".
Even if you discount the possibility of any iPad being the cause of the Mac Mini's demise I have the growing feeling that Apple are running a macOS side project which will eventually culminate in the creation of a Mac Nano - for want of a better name - all SSD and ARM cpu in a tiny box which will run apps only from the Mac Nano App Store - because why wouldn't Apple want a cut of revenue this way? It worked for Sony and Microsoft for their games consoles.
Apple already acknowledge the fact that they take 'less profit' from the Mini to make it happen. Despite the fact that we can now predict the next Mini could be based off the 13" Macbook Pro many of the people in this forum seem to want Intel horsepower on the cheap whereas Apple are looking at less profit per unit and spending commensurately less on R&D.
If you take a look into the Mac Pro forum, we already see people moaning about the pejorative perception that the 'new' Mac Pro 6,1 is a Mac Mini Pro. Could we see a future where there's only a Retina iMac in two sizes, and a Mac Pro which has a lower base model using i7 and one GPU?
If the Mini was scrapped and instead we were offered a lower base model Mac Pro - in that case - but costing twice the price of the top end current Mini would that satisfy many of the people in this thread wanting more cores, more compute power and dedicated graphics? Is there a silent majority willing to pay for low-powered but quiet and efficient computer?