So let's see, the number of people who might want to game on a Mini, and need would like a dedicated GPU is in single digits, and there are only a handful of people, like me, who want to drag around a Mini with some Professional Graphics Software on it.
You want to know what constitutes and even smaller group? The number of people who want to spend a thousand dollars to upgrade the video on an $800 computer because Apple's too short-sighted to include a $50 part and mark it up a hundred bucks. You can probably divide that group into the one person that wants to drag around a Mini with a bunch of external junk attached for that High-School Science-Project Look.
Small businesses always do well when they throw lots of money after half-baked solutions.
Of course those people could always better spend the money on the mid-range headless Mac. Oh wait, there is no Mid-range headless Mac because apparently, only a "handful" of people would want that.
People who are serious would, of course, buy the new MacPro Powerhouse Tower. Sure it's a little heavy, but I don't mind driving around with it! Oh, wait a second, I did that over two years ago. There is No New MacPro for all practical purposes, and I'm just dying to spend $7K on a new machine without Thunderbolt or USB3, and a Graphics Card I could probably dig out of a clearance bin at WalMart.
I guess I should just but a Mini iPad and fingerpaint for a living like the other 90% of Mac Users, maybe if I impress the Baristas at Starbucks they'll give me a buck out of the tip jar.
Apple should just sell the computer division, or at least the Non-Shiny part of it to someone who actually can innovate and cares about the 10% you're so eager to dismiss.