At the moment, the issue is relevant and would like to know whether you found the answer?
Also interested in the following questions:
Which of attribute or algorithm is sorted configuration items at the same level in the View in Atrium Explorer?
Can I control the location of configuration items at the same level in the View in Atrium Explorer?
I haven't received any answers so far - and didn't find it by myself.
I like the idea as well, please submit an idea entry.