Please create Instapaper plugin. It is a popular read later service and has good free account options. A big plus of this service is that it is integrated with Inoreader, a great RSS reader that also has nice free account option. This way users could create their RSS workflow for free. Of course premium account options make it even more attractive. This is not marketing, just a way to do this.
I wish such plugin could take advantage of highlight options as well. But the most important thing in this workflow would be to be able to have each article (containing title, url and highlight) as a separate block, not page. This way users could move blocks of information easily, change titles into highlights, create backlinks etc. Along with Link preview plugin this would be awesome solution.