Copy / Paste Scene, within and between projects, retaining all timings and settings.
Suggestion is for "Copy Scene" and "Paste Scene" commands on the timeline's right-click menu.
Copy Scene would available when a scene is being shown. It would copy the current scene to the clipboard.
Paste Scene would be available when there is a scene on the clipboard, and would paste the copied scene onto the timeline after the current scene (or at the beginning if it's a new project).
The copied and pasted scene should be an exact replica of the original. All scene settings should be the same. All item settings (Delay, Duration, orientation, stacking order, and Asset Settings.) should be identical to the original.
This feature will allow users to build a personal / brand 'library' of reusable content. For instance, branded titles and end credits. These could then easily be inserted into a family of videos (e.g. on a brand's YouTube playlist) to keep them consistent. It's vital for consistency that the copied scene identical to the original, without having to re-adjust timings.