Thank you for your reply and interest to make this work!
Chromium and one of the webserver plugins is maybe all there is needed to make it work.
If that does not work, there maybe needs to be made some system changes to Kodi to be able to have a webserver and SteemPi running on it.
If this is working, making it easy accessible with a add on would be possible.
(The features that would be missing when compared with a Raspberry Pi installation would be, No RetroPie (gaming) and no LED light notification)
yeah i'm not so fussed about LED light notification and would probably have another screen for retropie anyway! :)