Had it running for a few days now, only heard the fan once so far while installing a Mojave update.
The space grey is actually really dark, I like it a lot, feared it would be lighter.
The only thing that really bums me out about this lovely machine is that everything and everyone made it seem as if the HDMI 2.0 output could display 4K at 60 Hz, at least that was my wishful impression. But 4K @ 60 Hz over HDMI is definitely NOT the case. The web (including myself) is pretty f**ked up over it. It was one of the main reasons I bought the thang, because the damned Hackintosh using an iMac spec didn't support 60 Hz and was sluuuuuurgish to operate. No problem under Windows, 4K at 60 Hz like a dream, just not with macOS. Not giving users full bandwidth -despite it being possible technically- is just a shit move. Thumbs down (yer collective throat, Apple).
I'll be getting an eGPU for high performance graphics anyway (3D modelling and "gaming" = fire up Steam once a month, find nothing, close it again) so it doesn't really matter that much. But it would've been great to operate the Mini at 4K 60 Hz without the need to let the yuge eGPU run all the time. Oh, sure, it's possible. By getting a Thunderbolt3 dongle. And wasting an entire Thunderbolt3 port on built-in shared-memory CPU graphics rather than NVMe drives, audio interfaces, UAD cards, GPUs, etc. Juuust not possible via HDMI.
Something I hadn't thought of before... 2 USB slots. 1 goes down for keyboard and mouse, then I have 2 iLok dongles but only 1 port left... Well, sucks. Will probably have to do the Windows/PC thing then and get (insert retching sound) a USB hub. Or a docking station, hehe, for a stationary machine...
Regarding eGPUs, I read an official statement (or forum comment by official nVidia staff?) that it's not nVidia who are holding back nVidia web drivers for modern macOS versions, but Apple themselves. I mean, I can understand that Apple don't want to sign off on something that could be used in unofficial builds like Hackintoshes and compromise their sales, sure. But now that the world is waiting and burning to use external GPUs with official Apple machines, and it's even being supported and encouraged by Apple, why not let users just use the ones they want? Especially if the manufacturers WANT to provide driver support. I've always hated f**king AMD and ATI, and even today in any benchmark it shows that they're the worse (if not worst) choice against intel/nVidia. But now it looks like I'll be forced to use "the worse option" just because Apple (is what I'm guessing) have some trade deal going with AMD/ATI. There's no other reason to limit eGPU support to ATI, which is what Apple are currently doing. Here's preparing for some more retching...
I'm used to Apple getting flak for being snobby and pricey and "outdated" and all that, haters gonna hate, and I accept that some limitations usually lead to more focus, but I'm not used to Apple forcing their customers into using worse options than necessary.
