Valve recently introduced a reservation queue system for the Steam Controller to tackle scalpers and resellers. Now, it seems like the Steam Machine could launch with a similar system.
Frame modding will almost certainly be identical to deck. I could see the arm builds of proton maybe not being able to run some of the injection type mods but even in that case I don’t think it would be long before it gets sorted. Someone with one of those android handheld consoles that can now do the deck thing should be able to test it beforehand but it might be too niche with the current amount of users of that specific setup.
Frame modding will almost certainly be identical to deck. I could see the arm builds of proton maybe not being able to run some of the injection type mods but even in that case I don’t think it would be long before it gets sorted. Someone with one of those android handheld consoles that can now do the deck thing should be able to test it beforehand but it might be too niche with the current amount of users of that specific setup.