We all had external keyboards, mice, and multiple monitors on our desks. The only time we were ergonomically constrained was when we were mobile. But we could be mobile at a moment's notice, and with all our stuff still running.

Now what I really would like is a high quality, low latency complete remote system. I got pretty close to this with a recent experiment, but it took a good bit of effort (and I still had some weird issues). It was great in that I could go to any computer with enough power to drive a browser, remote into my server "desktop", and continue right where I left off.

If that could get perfected, I would probably switch to an iPad Pro with optional keyboard.