I think I have asked a question similar in the past, and unfortunately have gotten the response that it cannot be done.
However, on certain "out-of-the-box" tasks, I've seen detailed error messages such as "Failed to Download, trying again later" or the like. It is sometimes confusing what "is" and "is not" feasible with BigFix and the Console. Then, there is the WebUI which has it's own nuances and of which I am less familiar.
So, to address this I started writing the Action scripts and underlying tasks to have very specific exit codes within the script, such that you have to back reference to the Action script itself and figure out why something exited non-zero.
This doesn't directly address the concern but was the way I have had to "deal with it," but I would like definitely like to know if this type of function has come into availability as well !!!