In what ways can an end user of intel processor expect to benefit from this? I'm guessing none, since ever consumer interface is already a standard ... Can anybody chime in?
1. Verify that debug features that are remotely exploitable are actually disabled in consumer releases of their hardware.
2. Re-implement proprietary parts of the boot sequence, such as activating memory controllers, in an open and public manner that can be more easily looked over for flaws, security and otherwise.
3. Modify parameters and tweak hardware for additional stability or performance enhancements, especially undocumented or disabled(on lower graded chips of the same architecture) aspects of the hardware that may be present.
On the other hand barriers include legal issues depending on what country people working on these originate from, ethical issues, and even industry barring, and this is not exhaustive. Consumers, especially consumers in countries not concerned about the legal aspects will likely gain the most advantages, if any are present.