Can you expand here? What are you looking for in specific?

I think I have a framework-like TV. It's a high end TV set to store mode which has no smartOS annoyances. From there, I have expansion modules (they connect via HDMI) like a HDFury Vertex with CFW, Nvidia Shield, PS5, etc.

Decoupling the TV from the OS has helped a ton with longetivity

What more are you looking for?