This adds a prefix to sources of the same type, which can help to sort sources, especially when you have to choose from a dropdown of sources. Note that source name settings will only be applied after the source is actually created.
Thanks to @JoqniX from the OBS Discord Server for this suggestion!
OBS 29.1 beta versions currently have a bug that causes this feature to crash OBS. It will likely be fixed in an upcoming 29.1 version
Transform, Show/Hide (Visibility), and Show/Hide Transitions can now be copied!
Note that to be able to copy these scene item settings, you need to select the scene that contains the default source (the source that has the Source Defaults filter).