It’s not unexpected at all. Throwing in some drivers and whatnot is trivial compared to what Valve has already done with their OS. This ~~is~~ has always been part of their plan.

Can't be too much, considering Bazzite and Chimera already did it years ago. Maybe it doesn't have the level of polish that Valve wants.

It should be a very smooth development and install since it's a known set of hardware.

Is your question about the task for the end user? If all works well, it might take as long as installing a new operating system on any other device. Maybe half an hour give or take.

It's still being worked on at Valve