Proper, non-crippled, non-bloated, official Android TV with DSTV Now, Netflix and Showmax support.
You won't be able to build them fast enough.
Sounds good to me.
The option of not having a tv tuner is also nice, but since I have a tv license and quite a few tv's a non essential for now.
When it comes to choice of operating system for a smart tv, LG/Sony/Samsung are basically all ****. I guess having the Vidaa/opera/whatever thing at least gets you a smallish ecosystem but ultimately Android is probably the biggest app ecosystem in the world. The flexibility of choice is there for when you want to go beyond Netflix/youtube/showmax. DSTV now support would be nice but I'm pretty sure they specifically try and block most "TV" players, scared of people using their friends accounts and stuff probably.
As an example I might want to run an app called "iVMS-4500" to check my CCTV, that will never be made for Vidaa etc.
Or maybe open a browser to "HomeAssistant" to turn on some lights. Or just maybe I actually want to send an MQTT message to my tv to wake it up and switch to HDMI1... Now THAT would be smart...