Worth mentioning, you can buy small-run, newly-manufactured Apple II Z80 cards now in the 16-20MHz range (way faster than the host system), some even have a TMS9918 VDP chip for compatibility with MSX-1/Colecovision/SG1000 stuff.
Here they have an up to 20 MHz z80 card (and other Apple II stuff): https://www.tindie.com/products/gglabs/gz80-turbo-cpm-softca...
This has a VDP: http://www.apple2.net/
With an MSX2 VDP, it’d have 80 columns as well.