So there's that petition going around, and lots of people have “agreed” (see the trackbacks section on that comment for lots of people who agree)
Now, don't get me wrong, I want it there for all versions too. But saying “Microsoft should put this feature in all versions” is like saying “Macromedia should include flash mx with dreamweaver”. Sure, it'd be nice. But it's not like this is some taxpayer-funded initiative.
VS2005 is a product put out by a business. Having different versions with different featuresets at different prices are one way that they try to make sure to maximize thier sales...