When you upload designs, you have a whole gallery view of design comps. If you have a lot of comps, all of the designs kind of blend in with one another, making it hard for the end user to distinguish what pages/sections of the site (assuming your designs are for a website) begins where. It is also difficult to know what you're viewing when the user is in preview mode and using the Left and Right pagination arrows to move forward and back.

See sample image A. See that it is difficult to distinguish where what pages starts.
A: https://imgur.com/AHyoZCD

My proposal, is to add the capability of incorporating a Title screen where ever you see fit. See image B:
B: https://imgur.com/Eo85f1L

Solution Proposal:
I think the best method is to build this capability into Presentator, such that the title slides are managed independently. Each allows you to change background color, text size/color/position.

However, there could be an even easier method where you can leverage the https://placeholder.com/ service. The only thing that you would need allow for in Presentator is the ability to use an external url for slides in addition to the current uploads method. By allowing the use of an external url for a slide, the user should be able to insert a url such as this: https://via.placeholder.com/1600x1200.webp/000000/FFFFFF?text=Home%20Page

This should suffice as a title screen in between any slides the user needs.

I hope this made sense, thank you again.