videos icons view

When looking at icons view for videos (being served via the emby plugin), I am finding it hard to understand how artwork is used
It seems for both the icons and overlay, poster is used, but it is cropped landscape on icon and portrait on the overlay

Is it possible to show the poster (vertical image) on the overlay and fanart or backdrop (horizontal image) as the icon – that would be visually better in this kind of view. i have full control on which image to set as which type if artwork

an example is in the attached images

[Image: 20170514_141713.jpg]

[Image: 20170514_141659.jpg]