I wish there was a phone-laptop-dock solution that wasn't as expensive as an equivalent Chromebook. My phone is more than powerful enough to act as a travel laptop, yet its potential is constrained by a small touch screen..
https://www.theverge.com/2015/10/6/9464639/microsoft-windows...
I use Moonlight to remote to my desktop. Moonlight on Windows can capture Windows key(and some other shortcut like alt-tab) and redirect to remote machine.
Moonlight on Android can't do that, the dev this is Android issue and can't do anything about it.
In case glasses are an option, I heard that Xreal glasses can be hooked up to Android phones directly. Such a setup with a proper Android desktop mode (or even better: a Linux VM with all one's dotfiles and everything) would be fantastic IMO.