Real ZX or not!! It's a bit academic! ... I think the ZX Spectrum Next will keep the legacy of the original ZX alive....
I wonder how difficult/expensive (Based on the design of the current ZX Spectrum Next) it would be to make a CPC Next??
The ZXSN supports other FPGA cores. I think it comes with ZX81, Jupiter Ace and Spectrum (standard/enhanced) cores. It should be possible to integrate one of the CPC cores, as everything system-specific should be within the FPGA. Whether the Spectrum expansion port would be adapted to the CPC pinout is an issue. And then there are the ROM hacks required.
The ZXSN sprite/scrolling support looks a bit like the Plus implementation, but they will look very odd next to the attributey Speccy graphics.
I wonder why they've only gone for a 7MHz turbo option on the Z80 core?