True, but I don't they are going after Unicomps the same way. They seem to be going for original Ms. Such as the case with this. It's cool when someone takes an original piece of hardware and creates something like this, but if you were to create something brand new that mimics the original, it loses its luster.
Real M at secondhand shop: USD 5.
Unicomp Customizer: USD 70.
Nuff Said.
One of the big things lost in the "retro-like consoles" (the Atari in a joystick sort of thing) is the accessibility.
I got a Commodore VIC-20 outfit in *1996* or so, and what amazed me was the complete accessibility. I had been programming in good-old interpreted BASIC on DOS PCs for a few years, but the older "home computers" were in another world. The programmer's reference explained, basically byte for byte, the firmware, the registers of onboard circuits, everything. Admittedly, much of it was for want of high-level abstractions to do the cool stuff, but it would probably be easier to build many sorts of custom interfaced gear to talk to said VIC-20 than to a brand-new legacy-free Phenom.
I will admit I own a FC Twin (knock-off NES/SNES console) to play my old cartridges.
What I'd love would be a solder-it-yourself hobby kit to assemble something in the range bounded on the low-end with a Sinclair ZX81 and on the high-end with an IBM AT.