While I agree that most BIOS and/or UEFI installations are just... unacceptable, I don't think that a replacement will do just fine. The initialisation process should be as streamlined as possible, but allow as much control as possible. I would not call a multi-staged boot process "streamlined", when you argue that coreboot is the fastest way to boot up a computer. And then again, the whole process is repeated by the…
I'm curious, what do you propose instead?