Assuming this takes off and everyone uses it (you be the judge of those odds), I can see a standard format being really useful for both employers and job board websites.
Let's say you had a bank of resumes -- you could easily find all resumes that know Java and have had at least 2 jobs and an active GitHub repo, and automatically send out a request to their references.
Currently, you have to read an unformatted PDF and extract the info manually -- it's not the end of the world, but it gets tedious if you're dealing with lots of resumes.
It would be really useful for the people making the resume also. Right now the current mainstream advice is to use Microsoft Word for creation and editing and then (typically) to submit as PDF. Both of those document standards are proprietary and opaque. If you two computers that don't have the same operating system, you're probably SOL for tweaking your resumes across computers as well.
Let's say you had a bank of resumes -- you could easily find all resumes that know Java and have had at least 2 jobs and an active GitHub repo, and automatically send out a request to their references.
Currently, you have to read an unformatted PDF and extract the info manually -- it's not the end of the world, but it gets tedious if you're dealing with lots of resumes.