Not really a fix. .
. . . it does nothing for older editions of Office installed out there. After all, for basic functionality, ANY edition of Office will work for the vast majority of users. And there's really no incentive for general users to upgrade: hell, we use Office 2007 at home, and are fine with it.
Secondly, Group Policy ? REALLY ? So this is a fix aimed PURELY at Corporate users, with sufficient IT support to (1) HAVE Group Policies, and (2) have admins sufficiently clueful to correctly enable and configure the policy. And Group Policy requires a Domain and at least the Professional edition of Windows: Home versions don't support GPOs. . . So, again, Corporate love, but the heck with the rest of the users out there. . .
Lastly, was there EVER a good reason to embed macro functionality into documents ? I've been doing IT for 25+ years, and I have yet to see one . . .