I added image for OrangePi Lite and new update for all images.
please understand than current images are composed of alpha quality LibreELEC, beta quality Kodi and pre-alpha quality of Allwinner specifics, including HW video codecs.
As I said in OP, MPEG2 is the only really working codec, while H264 and H265 are far from fully working. It will probably take months before they are ready
I'm not sure plugins will work well with any image I'll release, because my images will always have latest development version of Kodi, where plugin interface might change. However, you can always build the plugin you want from the source I provide. Things will stabilize once Allwinner project is good enough to be merged in main branch and thus receive official support.