I have built a workaround for this problem but it would be nice if SS could do this automatically. Currently there is no way to add a column that shows any predecessor tasks in a report, it just says predecessor.
My solution lists the auto# column that is used for reference to see which tasks have a dependency and what the reference task# is. I can share this with anyone who wants the solution, not sure where or how to post it.
Thanks,
-Sean