Nice idea.. It will be interesting to see your collated results.
I had a skim through the thread on the ATC forum and noticed most of the 'irks' relate to fixed wing pilots. Except;
The 1500' heli pilot who likes to take his time on the R/T, telling me where he is, where he's going to (and sometimes why), what he's doing then, and then, before heading back to there.. all these little bits of info broken up with "ummm"s and "ehh"s.
What about a 'What irks you about heli pilots' thread for us?