Table of Contents Block Tracking Page Scroll
The table of contents block should have a setting that can highlight where you are in the article as you scroll. I have seen this done on other websites where the table of contents is sticky in the sidebar and tracks your progress down the page. For example, when you scroll pass the second H2 heading on the page, the second H2 in the table of contents changes color to indicate where you are in the article. This becomes really helpful for long form content, and make the table of contents block far more reader friendly.