Is there a big frontier still to come which requires more cpu/gpu processing power compared to 10 years ago? We seem to have plateaued that the marginal value of a new Mini V 2012 is /dev/null.
Oh, indeed! Mac Minis have plateaued, Apple has apparently pushed them to the point where they are satisfied with what they can do. I mean the 2014 Minis were marketed as being "greener" than the 2012 Minis, not more powerful.
On the other hand, SFF computers are advancing by leaps and bounds! The Intel Skull Canyon NUC, with its top-flight CPU, GPU, room for multiple SSDs, and top-end connectivity, all at a surprisingly decent price, show that you can in fact have a SFF computer without really sacrificing anything.
Wish Apple made computers like that.