OK, let me rephrase: Demand for machine that does better than the Mini but is not a Pro. The Mini has been buffed a lot in most specs and as such it's a nice machine. However, it's the exact opposite of Apple philosophy when you want even a little GPU power. Apple always wanted you to have a clean desk, with a s little cable as possible. If you have to connect an eGPU over TB (wich is quite expensive on its own) and has very limited bandwidth compared to PCIe x16 you will have an additional box on your desk with another power supply (cable). That's so non-Apple.
Put an nVidia Quadro or AMD Pro GPU in there and you have an entry level workstation for the broader mass, because, quite frankly, the Mac Pro is out of budget for semi-pro usage, especially the prosumer market.
And, yes, I'm well aware that they are not going to make a "small gaming mac". That was just the quickest term for "small mac with real mass storage (3,5" support for a couple TB) and PCIe board slot for GPUs or other hardware".
And that would in no world be a cheap tower. An ITX machine at >1500 without GPU is like 2.5-3 times more expensive than a DIY windows setup.
As for Ive, more recent hardware is certainly not carrying "his (recent) signature" anymore. Phones got way thicker than they used to be. Design is also rolled back to iPhone 5 like shapes (when Ive was still good). Blessed or not, I don't care...