The use case I'm imaging is this:
You're on a website that offers several pages of content, like google search result pages or products in an online store.
Why not mark up links to the previous/next pages and all other links to pagination via html attributes? This would allow browsers to use that information to provide shortcuts to those pages.
Also I can imagine this making life easier for people using assistive technology.
0: https://chrome.google.com/webstore/detail/vimium/dbepggeogba...