A quick review of NAV 2017 reveals, that concerning Wordlayout reports nothing essential has been improved.
Still there seems to be no possibility to use repeating section content controls except for single table rows and they can’t be nested. Rich text controls for dynamic content, formatted text or images are still not supported.
But the empty image problem has been resolved: If images are printed within repeating table rows, an empty image is printed as blank and not with the picture of the last non empty image.
Finally, Wordlayout+ remains the state of the art for NAV 2017.