I was happy to report earlier that I was successful in testing 2010 Slide Libraries upgraded to SharePoint 2016. I wanted to add some screen shots here to let you know what to expect.
Remember, of course, that you've not really "solved" the problem of Slide Libraries: You cannot create new slide libraries in SharePoint 2016,
and PowerPoint 2016 has no idea what a Slide Library is so you cannot but you can publish new slides to an existing library. So if you're working with a customer who hasn't yet adopted using simultaneous editing for presentations and insists on bringing slide libraries along to SharePoint 2016, you should know what to expect.
Here's a screen shot of a SharePoint 2010 library which has been successfully moved to SharePoint 2013 (database attach), upgraded to SharePoint 2013 view, then moved to SharePoint 2016 (database attach):
Not all that exciting, but sometimes that's the best result - you keep the data you wanted and maybe the users don't even notice that much of a change.