I fully endorse this idea - i hope Arjunah will consider doing it. Though she already have done a lot for us lately.
I for instance have tried both elemental/resto/enhancment builds as a shaman, and have been asked by many lowbies what i prefer and why - this could be a nice oppertunity to pass on any ideas and thoughts i have on the matter.
In turn i have a rogue and a lock alt, and im very much in doubt about their builds - and it would be nice to read what others thought about these classes.