Reorder imported PPT slides

Could imported slides from PPT be re-ordered or deleted?

As they are rendered as images.

Even added to with a last minute JPG?

We often get asked to skip a slide in a presentation, or someone turns up with a notice that needs to go into a pre-service loop.

Another option, within [Edit] would be a link to the original (or copy of) file in the database to fire up the Powerpoint/Keynote to edit it there?
It's often hard to find.