Welcome to the forum!
@ONR_Writes: Synchronous Scrolling
This would be of limited use in a program like Scrivener, but we have a different solution for addressing the same problem, that tends to work better for cases where the two different texts are potentially of different lengths at different areas of the text. Here is a recent discussion on the matter.
Columns on the Binder
The menu command, View ▸ Outline, view mode in the main editor is intended to be where one can have a more expanded view of the metadata associated with items. Something to consider is that you can split the editor so that it is possible to continue working with content, while having an outliner view on the left—and it is of course even possible to set that outliner to load what you click on in the right editor, with Navigate ▸ Outliner Selection Affects ▸ Other Editor, and even close the binder (with View ▸ Binder), using the outliner as a surrogate binder.