I get a build error (with and without SCU build enabled):

editor/project_manager.cpp: In member function 'void ProjectManager::_show_editor_settings()':
editor/project_manager.cpp:2628:17: error: 'EditorHelp' has not been declared
 2628 |                 EditorHelp::generate_doc();
      |                 ^~~~~~~~~~
scons: *** [editor/project_manager.linuxbsd.editor.x86_64.o] Error 1
scons: building terminated because of errors.
[Time elapsed: 00:00:23.472]

Also, according to the video you posted, the editor settings window is too tall to fit within the project manager's default size. It should be possible to use a smaller default size for it when in the project manager.

I think we wanted to have a simplified version of the dialog in the PM, just some essentials as to not overwhelm users with settings and provide only those which may be wanted before editing a project.

We can have simplified version when we add Advanced toggle to Editor Settings.

Well, IIRC the idea was for something really really simplified. Like having language, scale, theme, but not much else. Something that helps to set up the initial experience.

Well there is use-case for other settings too, e.g. godotengine/godot-proposals#1602 (comment)
Not sure what idea do you refer to, as it's not in the linked proposal.

Yes, it's not. I'm just recalling discussions that we had before. Maybe there are some comments in other proposals or issues that refer to them. In any case, just thought I'd mention it.

@YuriSizov I would rather have every setting be available, using the same code as the editor settings when a project is open. All of these settings are not tied to a project, so they should not be required to be edited from within a project. Also, some settings require a restart of the editor to take effect, like setting the Blender path, so it's better to go PM -> Settings -> Project than PM -> Project -> Settings -> Project (and with the latter, the first time you open the project it may not load correctly because Godot is unable to import the Blender files).

In the long run, we should have dedicated "simple" Project Settings and Editor Settings dialogs (not just a listing of options but with dedicated UI), but until then, exposing the current editor settings dialog is a net upgrade.

@KoBeWi Can you rebase this? I would still like to have the full editor settings available here, so to me it's a desired feature.

Thanks! Excellent job getting this put together!