That wouldn't help the people who couldn't install...
True it wouldn't. But don't you usually check if the majority of your hardware is supported before you try a new OS? I'm guessing you are talking about people who are new to Linux. People who have used it before will know "oh my sound card works, but last time I had to mess this or that file to get the game port work" Your right though, it wouldn't help those who blindly did an install. But I hope that most people do their research... if so this is a tool for them.
I have to remind myself that not to limit it to just that though. Could also be an incredible tool for developers and hardware vendors alike. Developers can look at it and say "oh this chipset needs such and such of a modification done" and fix the problem so it works out of the box.
Vendors could look at it and say "WTF, where is our support? Let's get our butts going" :)
So it's an all around tool. *Hopefully*