If GTK Hardware Lister does what I think it does, I would like to put it on all my systems, as standard operating procedure. I found GParted to be very useful when experimenting with Puppy, where GParted is included on its liveCD.
I don't think you can assume that most users know about System Rescue CD, nor that an individual user is inclined to take the trouble to download it, burn it, and know how to make use of it.
The suite doesn't have to be complete, just a nice selection of useful tools, say, 10 utilities/tools, as a convenience to users of the liveCD.
EDIT: I just had a long look at my copy of SystemRescueCd 0.3, and I think it's not so easy to use. You get the command line by default. It's text based. I hunted for 10 minutes trying to find GParted, never found it, although I'm sure it's there.