"But I assume you mean PDF output, then you need a screen form factor that is paper-like, like an iPad or some other letter/A4 style tablet."
Why do I need this? Concretely, I go to the arXiv. I look at the paper a bit on my laptop. Then I print it and read it away from my laptop. The printed version has the same pagination and layout as the screen version.
> Then I print it and read it away from my laptop. The printed version has the same pagination and layout as the screen version.
You can totally do that, and that is the most common case. However, if you had a letter-sized device perfect for viewing PDF papers, it wouldn't be "weird" anymore, the pagination and layout would just feel like a good fit.
Why do I need this? Concretely, I go to the arXiv. I look at the paper a bit on my laptop. Then I print it and read it away from my laptop. The printed version has the same pagination and layout as the screen version.