Having everything in the "keyboard" (or as we viewed it then, not having the keyboard separate from the computer) is pretty reminiscent of the 8-bit and early 16-bit home computers.

Sounds cute, but the benefit of a big tin box is that you can fit all the peripherals inside it, and there's plenty of room for cooling, etc. Unless there's already a lot integrated into the "keyboard" unit, then you're going to be back to the old 8-bit setup with lots of peripherals plugged in via cables. Possibly moreso, because in those days (aside from the monitor) most people only had a tape deck and possibly a disk drive and/or printer. Plus this restricts how you can move the "keyboard" around.

This might be an acceptable tradeoff for a laptop (particularly if it includes a docking station), but the benefit is less clear for a permanently home/office-based computer.

The integrated screen looks nice, but other than that I'm not convinced that this offers anything beyond an excuse to go "reminds me of a C64/Spectrum/whatever".