I'm not sure if I'll like this option.  Everything becomes a house of cards where a problem in one application begins to take down everything.  Outlook Express used to be a great newsreader till it became more entwined with IE.  I've had problems in Windows Explorer trash IE. Now antivirus programs are preventing people from using software they purchase.

Windows based software has never been the most compatible stuff in the world and creating ever greater interdependencies on that software seems like a tech support nightmare where people will be incapable of running software on their own right out of the box.