Pathfinder is... Interesting.
What I mean is it kind of highlights how the OGL didn't accomplish one of the prime goals it wanted to accomplish. (Sort of.)
The OGL was supposed to allow for the open sourcing of the game; which, like open source software, would allow for the game to be built based on what worked best. This worked, partially for DMs... There were options and variants they could apply to their campaign to model the "perfect" system. But I don't think it worked for the game itself. There were lots of Variant systems, but each one was a company's take, and then the company went on to simply attempt to promote their take as best. There was never a remerging of the concepts into a single "best."
I think Paizo has a real oportunity here to make the idea behind the OGL actually work.
Instead of once again just getting some designers together to create their idea of how to fix it, they should look back at the history of OGL material and try to find the options and ideas that realy DID work the best. The stuff the fans thought was right, and really worked.
Then Paizo can use their creative talent to, instead of reinvent the wheel, figure out how to mold the already existing wheel onto a system that really IS perfect. (At least somewhat.)