Storyline Interface Suggestions

Thanks for responding, Luciana.

As for the navigation question: I'm working on a course in which one can navigate between slides in a non-linear way, jumping from A to D to B and back to A. The default in Storyline is alway Prev/Next, but that's only used for the first three slides of this one. (It's a 3D tour.) I hide those buttons because they're never used. If I have a button (actually a marker in a 360 interaction) that jumps A to D, I often want to work on D, then jump back to A. A Back button a la all web browsers since Mosaic would be very useful to me in that situation. I could Back/Forward between them to get their interaction correct.

Timestamping: in my current course, there is an introductory video that I want to skip past when someone is reviewing content. 

The thumbnail size is a problem whenever you're trying to find a slide and you have more than about 7 in the Scene. The thumbnail images are about 2mm across, and you only get two characters of the slide title. You can zoom in, but you have to do it over and over, because they unzoom whenever you navigate. If I could just make the panel  wider, they'd be permanently larger.