Following up on this in case anyone has a similar question: It arrived today, and setting it up was generally a breeze. Got PlexKodiConnect working perfectly, and was able to get Xbox remote play and Cloud Streaming working by sideloading APKs. Pretty impressed so far, aside from one annoying issue.
Pressing the Xbox button on an Xbox controller takes you home. The Android TV home. So if you’re remote playing and you need to access anything outside of the currently running game… you’re out of luck.
That aside, it works decently well on a 1080p TV via Wi-Fi 5. I might fiddle with the Xbplay app later to see if I can cloud stream in 1080p instead of 720p.
Edit: I have fiddled with the Xbplay app. Frankly, it’s not a very pretty app, but it works great and the games look better. Gonna be using this from now on, and there’s no need to sideload random old APKs.
I was also able to get around the Xbox home button issue: I don’t really use Netflix, so I wanted to remap the dedicated button on the remote. I managed to do that using this app, and it also let me disable the “single press to go home” function for the Xbox button. I was able to remap the Share button to the Xbox button, so now I can access the guide and such, and accidentally pressing the Xbox button doesn’t kick me back to the Android TV home screen.