The plugin is already very usefull to group jobs in logical groups, but it would be more usefull if the state of the group/nested view would be visible from the main-view.
Here an example what I mean (and yes, my image manipulation-skills aren't great):
http://img576.imageshack.us/img576/6958/nestedviewidea.png
For example, the sun appears when 100% of the last jobs in the nested view succeded, cloudy if 99-80% succeded, and so on. It would help us to determine, I which part of the application something went wrong.