Let's say I have Flash, Reader, and Shockwave with each it's own package.  Let's say I want to make an Adobe package that installs all three.  Right now I have to reproduce what I am doing with the three individual packages in one package.  Now let's say I need to make a change to the install if Reader.  I will have to make the change to any and all packages that install Reader(Reader package, Adobe package, and maybe an all software package).
It would be awesome to create a package that runs other packages.  So I create an all Adobe package and the steps are to run the other packages.
This would be so nice.
Thanks