Stealth aircraft don't need Electronic Warfare strike packages (other aircraft in the attacking group). They can go in undetected and take out an enemy's air defenses, allowing other non-stealthy aircraft to penetrate easier. That's what the term "force multipler" means - making your forces more effective, and that's why stealth is so important. In the not too distant future, there'll be a term for non-stealthy combat aircraft. That word will be "target."

The F-117A can go in and attack critical targets and air defenses using laser (and perhaps GPS) guided bombs. The F-22 will also be able to do that and much more, including taking out other fighters (the F-117A has no air-to-air capability), ground attack missiles, and now electronic attack.

As for the SR-71, it was a hell of a plane in its day. One of my coworkers was an SR-71 Reconnaissance Systems Officer for 5 years. The plane could blow over a hostile country at the speed of heat and collect some images. What the new trend in UAVs and to a lessor extent planes like the F-22 allow is sustained surveillance over a period of time (for the Global Hawk, that's upwards of 24 hours on station). That's much more useful in most cases.