[Montellese]

@Montellese 
If you are interested and need any assistance in how Emby or the existing Emby-for-Kodi add-on works I can invite you to our internal Discord group with @angelblue05. She dealt with the API the last years and know all good and bad sides of it. I would love to see this feature be completed on some day. And I also think that Luke (of Emby) is interested in get this thing working. Just send me a PM in that case.

Edit:
Tested it with the latest Emby beta server (4.3.0.15) and it "worked". Tried a movie lib import, but it imported everything as movie. Music, TV shows, episodes, etc. No metadata at all except name + artwork.
FYI https://paste.kodi.tv

Thanks for the offer.

The main thing I don't know how to get working is updating metadata on the Emby server from the add-on i.e. if the user has watched a movie from the Emby server in Kodi how to tell Emby that the item has been watched etc. Apart from that I only ran into an odd behaviour of the "SortName" property for seasons which I don't understand but everything else seems to be working fine (at least with my setup).

Unfortunately your pastebin doesn't point to a specific kodi log.