Got the differences, answered my question. Just tried both again independently, installed and removed each to double-check the differences
Regular Android 1.5.1 works with airmote only, using the remote keys will cause it to crash, and offline viewing is available. The user experience loses a bit by being airmote only, but you gain offline viewing
Android TV 1.5.0 gains full remote functionality, but is streaming only, only option available is to reduce stream quality. I guess it’s because normally TV’s don’t have local storage
If we could ensure the normal version of the app would stop crashing, is there something in how the Android version we handles the remote input that can be improved?
We could all also hammer Disney support to request for download option to be added to Android TV version of the app! 
New edit!
Update! Version 1.5.2 normal apk, NOT Android TV. Get the file from apkmirror, install with apkmirror installer and then change the viewing mode to appliance, don’t use tv mode (well any mode except television). That fixes the UI, you get to use controller again, moderate use of airmote still needed, and freaking download option on all! Yay, baby!
