Actual proper Google home intergration. (but I guess thats more of a software thing). Also a better "built in Chromecast" (but again, more software issues). I'd like a really good remote though, with less of a black brick design and something more interesting.
The honest r/AndroidTV answer:
Far field mics
HDMI passthrough
atsc 3.0 tuner built inside
A TV box and a TV, both sold separately. Both come with the same remote and are all designed with the Google hardware design asthetic. The TV box and the TV both have Chromecast built in and will come bundled with six months of stadia pro along with a few free games.
HDMI 2.1
more on-device storage. i have like 20-30 apps and i often have to clear cache to have enough space to update them.
should be minimum 16 gigs, not 8, for a regular device. for a hero, maybe 32 or 64 gigs.
10+ years of android updates.
Always on Assistant with far field microphones or integration with Home Mini like Shield Spot intended to be 😂, more control with voice commands and navigation for the super lazy, HDMI IN So i can hook my cable and have assistant, pip, one UI home screen, USB ports and a remote with ir so it can control the rest of the system through HDMI CEC and iR like the TV, the cable box etc like Apple remote can control volume and other devices.
Gigabit ethernet. Without this, “any” future android tv device will be severely handicapped with not being able to handle 4k bitrates.