That is delightful. I remember using 3270's back in "the lab" in high school ("alt-pf2" twice to compile!), and marveling at the individual phosphors on the screen. (When I could see better, for sure.)

Sadly, it doesn’t turn the keyboard into a beam spring one…

That's another expensive hobby to get into

I can make it sound like a Selectric, at least:

https://github.com/rbanffy/selectric-mode