Stephen,
I see your point about the science versus phony math – and in fact PRMIA appears to be quite aware of this criticism. If you look at their revised syllabus (under the blog), you will notice that the supplementary papers address the financial crises in particular. I have looked briefly at the new material and it is very good.
For your first question, the PRM certification already enjoys fairly good recognition in the industry though of course it is not as wide in its coverage as the CFA. The PRM is focused exclusively on risk management, and if risk is your field, then I don’t think there is any better certfication available than the PRM. It is recognized widely in the developing world with active chapters and member populations in India and China. A key benefit of the PRM is the networking opportunities it offers within a niche field.
Mukul