Eh, I dont want steam machine becoming a standardized PC.

having CPU and GPU baked into the board and unchangable will just increase e-waste cause it will age out much faster than a PC which you could, 3-4 years down the line, max out the CPU in, throw more ram into, or upgrade teh GPU, to keep it relevant for another 4+ years

It serves its niche purpose, but it should not become standard.