Yeah I'm really surprised they didn't go with a laptop screen rather than a monitor designed to be left in a fixed place! Whoever's first to market with a good laptop e-ink display is going to rake it in.
It's already possible, with a remarkable 2 and a special vnc client https://github.com/matteodelabre/vnsee. Though I have not tried it yet, it looks great, but the screen is way smaller than an usual pc monitor
I have a Onyx Boox Max, an A4 b/w e-ink device. I can't use that as a screen, due to too low refresh rate. Writing on it with it's pen is great, but typing on it is horrible. The slight delay breaks the usability.
I don't know how that stacks against the remarkable 2.
The device looks neat, but I don't like the "Connect costs $4.99 per month" stuff when you've already paid for the device. Is the device fairly locked down to force you to pay for their cloud service?
I've never needed it, I have a remarkable 1 and it's perfectly enough for my usage, I use it only as an ebook reader that can takes notes, I don't need the fancy colors features of the new one.