Typing only on the keyboard can be very nice for posture, but I feel that Vim users may think slightly differently if people invented a better keyboard with a pointer device attached.

Then you wouldn't be "taking your hands off the keyboard", you'd just be engaging in a different motion.

That's how I feel when using a keyboard with an integrated trackpoint.

Not everybody agrees, of course.

What keyboards have worked out for you?

Tex Yoda II: https://mechanicalkeyboards.com/shop/index.php?l=product_det...

Thinkpad external keyboards, both USB and bluetooth - currently typing on one of the former, with one of the latter in my jacket pocket for use with my android tablet.

I’m suprised no one tried an eye tracking cursor

I dont think eye tracking is precise enough for that.

Similar to the "KeyMouse" keyboard?

Can you recommend a place where I can read about these "plan9 paradigms"? I have an interest in it from a design perspective, but don't quite have time to read the source code.

The original paper on acme is here: http://doc.cat-v.org/plan_9/4th_edition/papers/acme/

Acme was different to the 'sam' editor and most other Plan 9 programs up to that point (aside from its predecessor, "help", a similar system that was replaced by acme).

Look up a YouTube of somebody using it and discussing its features. Basically you could mount computational resources like cpus/ram/network/etc from an external resource server. It also had a graphical equivalent to the Unix pipe between applications.