(Someone just read this and made a billion dollars.)

There is a converging body of thought suggesting that the workplace of the future will not wait for leaders to find experts   - hierarchy is old school and so is matrix management - too slow, too complicated, impossible to administer.
Rather we will assemble "flash mobs" of talent as a job needs to be done, then dissolve them afterward.
"In the traditional company -- and agency -- structure, multiple layers of personnel exist for a purpose that often amounts to moving information around...Under the emerging new approach, "what you see happen over and over again...is that you just don't have those middle layers"..."What happens when you release information [is that] people on an individual level create their own networks outside their offices," said Karina Homme, senior director of social enterprise transformation at Salesforce.com. "People can now create communities around their interest areas."
In the new world it will be the networkers who survive.
The litmus test for success will be 360 peer feedback.
"Just about every company has its own version of a 360 degree feedback process. Nevertheless, Vineet saw several problems with HCLT’s off-the-shelf approach. First, it didn’t focus explicitly on how managers were impacting those in the value zone. Second, employees fearful of retaliation often pulled their punches when reviewing their supervisor. And third, the fact that feedback could only come from one’s immediate colleagues tended to reinforce long-standing organization silos. Today, HCLT employees are able to rate the performance of any manager whose decisions impact their work lives, and to do so anonymously."
I would not be surprised if eventually there were a website that followed you across the span of your whole career (possibly appended to LinkedIn) where people who had worked with you, and whose identities could be verified, then rated your skills and expertise. Like your avatar.
(Someone just read this and made a billion dollars.)
The other thing is that people who are proficient and engaged on networks like Yammer, GovLoop, etc. are going to be the ones called to join project teams.