Currently Gracenote data supports background images for programmes. It would be great if Plex supported background images supplied in XMLTV files via the image tag. For example:
<programme start="20220331180000 +0000" stop="20220331190000 +0000" channel="channel-one.tv">
...
<image type="backdrop" size="3" orient="L" system="tvdb">https://tvdb.com/programme_one_backdrop_3.jpg</image>
...
</programme>
This is an officially supported tag from the XMLTV DTD.
(Also, it would be great if Plex were to provide a list of what XMLTV tags they look at. For example, I don’t believe the fact Plex can parse <sport> and <team> tags is documented anywhere)