Ability to retitle table of contents in presentations

If you are not using the native header for a slide in presentations, slides within the table of contents merely appear as "Slide #". As your presentation gets longer, it is challenging to quickly navigate around slides without the title or name appearing in the table of contents. The ability to manually edit the names would be helpful. This would also be helpful for any separator slides, or section start slides. We wouldn't want a header on each one of them, yet knowing where they are within the table of contents would be a smoother presentation.