[throwaway13411]

I believe that a different tool is needed for capturing notes and a different one for presentation.

Evernote does the capturing well enough. Both Evernote and OneNote allow capturing parts of a web page with their web clipper but OneNote's workflow is cumbersome.

I think about this like in writing (pg's model of writing essays), where you write a lot of ideas down in no particular order, dumping random thoughts as they come and then on subsequent "passes" you try to bring the scattered thoughts in order, arrange them in paragraphs etc.

Another tangential idea is Jupyter notebooks for research ("research" as in studying a topic). For example if you're researching a topic, you can use Evernote web clipper to do all the capturing from various webpages and then you would have curate/organize this information in a "jupyter notebook for text"/blog post. Maybe offer the functionality to add comments/marginalia (like distill.pub's implementation, e.g. https://distill.pub/2018/differentiable-parameterizations/).

Drawing snippets from multiple web pages and books also brings Ted Nelson's transclusion concept to mind: https://en.wikipedia.org/wiki/Transclusion