To optimize a CMS GUI for content creation and editing:

1. Streamline content modeling: Simplify content structure and fields.

2. Intuitive interface: Use clear labels, icons, and layouts.

3. WYSIWYG editor: Provide a user-friendly, drag-and-drop editor.

4. Real-time preview: Offer live preview of content changes.

5. Customizable workflows: Allow users to create personalized editing workflows.

6. Collaborative tools: Incorporate features for co-authoring and commenting.

7. Media management: Simplify image and file uploads, with editing capabilities.

8. Content suggestions: Offer AI-powered content suggestions and ideas.

9. Snippet library: Provide reusable content snippets for efficiency.

10. Version control: Track changes and revisions with ease.

11. Accessibility features: Ensure the GUI meets accessibility standards.

12. Keyboard shortcuts: Offer customizable shortcuts for faster editing.

13. Content analytics: Display relevant metrics and insights.

14. Drag-and-drop functionality: Enable easy content reordering and organization.

15. User feedback mechanisms: