It looks as if you're getting the same response here as in the IRC channel, albeit much more drawn out.
Aren't the AML laws in place already? And they effect everyone? You can't accept cash for gold in any significant amount and not be required to report your business to the MAN. You know, for taxes and all that jazz.
If a government feels threatened by bitcoin, the DEV team(s) would simply be an easy starting point if they comply. If big brother starts leaning on them, I expect they'll step down. The math does not need to change, there would need to be more information contained about sender and receiver. Let's drop this, they can do their own damn figuring on how. Implementation would be a nightmare, and a fork would likely result, govcoin.
That being said, there are other attack vectors than code changes. Why bother with that fuss and bad PR of attacking open source software development when they can pass a law in relative secrecy banning the transacting of fiat with bitcoin related business, to stop the funding of terrorism.