Currently being certified has no value, not to Open Source, not to Closed Source, since companies are clearly doing fine without it. So it's hard to see them paying extra for it.

We've had professional certifications for years. Novell, Citrix, Microsoft, SAP, Oracle, they all make money selling certification to naive users. Anyone who's bothered knows they don't really mean much.

But hey, if you think there's demand, set up a body and give it a go. Personally I think it's a waste of time, but if you can get enough companies to care, and enough developers to pay, you'll have a nice business.

Herding cats sounds easier.