Don't EV certs create a net increase in security risk (if any web users understood what they were supposed to mean)? I'm not expert in these issues, but I've always doubted their security value:
EV certs are supposed to communicate certainty[1] to typical web users about identity, confidentiality, and integrity. But, if I understand correctly, obtaining EV certs in someone else's name (or something close enough to fool web users) is possible without great cost, and so that message of high security is misleading. If EV certs were believed by end users, wouldn't we merely be creating a social engineering security hole? Competent thieves also would use EV certs and increase trust in their websites too.
Thankfully, I've never met an end user without technical knowledge who understood what an EV cert was. I do know what they are and I don't trust them more than regular certs (which is not much for identity, but I do as protection against low-cost confidentiality and integrity attacks).
[1] Re: "certainty": I know EV certs are supposed to be more secure and not perfectly secure, and that there is no perfect or 'certain' security. However, few end users understand the latter, and of the ones that do few would take the time to learn the degree of increased security EV provides. We shouldn't say, 'trust the green bar' unless we expect people to do it.