Modern replacement as a kodi box for both shield and pi is ugoos am6b+. ~120$ on aliexpress (probably more with tariffs) and once you flash it with coreelec it can natively playback pretty much any format except av1. You still dual boot to android so can also run all the streaming apps too, if you want, and the android is really stripped back vs the shield (especially the later releases where ad bullshit creeped in quite a bit) though not fully degoogled because the play store is still present. Main downside is some issues with hdmi-cec. It works 99% but power on doesn’t when in coreelec. Ugoos locked the bootloader for some reason and refuses to unlock it. Fixes for this depend on equipment and use scenario. Some people on the forum that watch tv a lot just disable power on/off cec and leave it running 24/7, it’s pretty low power. I have an avr that works with hdmi-cec and home assistant so I have hdmi-cec on/off turned on, it will turn off when I turn the tv off with remote, and when I turn the tv on the avr turns on via CEC then home assistant sends a wake-on-lan packet to the device, which turns it on. A bit of a delay, but works. Only device on the market that can properly play back Dolby vision though, including commercial bluray players. If you download 2160p remux with the dv layer for lg oled this is literally the only thing that plays it back correctly. Alternatively just get hdr rips