How would you improve Google Docs's real-time collaboration feature?

To improve Google Docs' real-time collaboration, I'd focus on enhancing granular control and user experience. This could involve:

1. Advanced Permissions: Beyond view/edit/comment, allow setting permissions for specific sections or even individual paragraphs, enabling more sophisticated co-authoring workflows.
2. Presence Indicators: More nuanced indicators showing what a collaborator is actively working on (e.g., highlighting the specific sentence being edited) rather than just their cursor.
3. Conflict Resolution: Implement smarter, more intuitive conflict resolution tools when multiple users edit the same sentence simultaneously, perhaps offering a side-by-side diff view for manual merging.
4. Activity Feed: A more robust activity feed that not only logs changes but also provides context, like who made a change and why (if a comment was attached to the edit).
5. Offline Collaboration: Improve the robustness and merging capabilities of offline editing, ensuring seamless synchronization when connectivity is restored.