That's pretty close to what I'd be looking for, yes, a problem I'm having with common pdf viewers is that I'd need to open the files I'd want to read from beforehand, instead of just passing to the next file like i would in a gallery.
This requires that I'd know which files are relevant to me before reading said files.
That said, my use case does sound unique so I'm not surprised it's hard to figure out what im looking for :)