haitchfiveBrian Swetland's mechanical keyboard for the ZX81
https://github.com/swetland/zx81-keyboard/
Studio 8502 
@haitchfive I've said it before and I'll say it again -- I'd like the ZX-style macro keyboard a lot more if I wasn't forced to use the macro keys, but could use them as an option. Granted, the BASIC on my ZX Spectrum Next doesn't use the macros at all, you type it all out like a normal person, but still.
There are two points of view about this:
1) People who weren't born with a ZX81 or a ZX Spectrum under their arm, and see the ZX input method as abnormal, or subpar.
Bread80@haitchfive @mos_8502 I’ve always assumed part of the reasoning was to make the input parser a lot simpler. Thereby cutting down on the ROM space needed.
Either ways, ISTR my muscle memory learning the keystrokes fairly quickly and getting along well with the system. Although, at 10 years old I didn’t really have a lot to judge it against.
I think that's genius design.
The 128k introduced the more normal code editor, and that occupied another ROM, and the editor ROM is paged on top of the 0x0000 - 0x4000 area of system ROM.
It probably gives a more "professional" feel to people who don't understand the ZX BASIC input system. But really, if you compare the Sinclair editor to what was available on Unix at the time, it wasn't vastly different from vi and ed.