Nethaera hit the forums this morning, asking for feedback from tanks around the globe. Ghostcrawler has been having a lively discussion with tanks (most specifically protection warriors) recently, and now they seem to be formalizing the discussion for the wider audience.
Nethaera goes on to remind people that this thread isn't the place for balance discussions necessarily, and certainly not a place to debate who's overpowered. This feedback also won't dictate exactly what the developers will do, it will simply help them make the right decisions. Do you have an opinion? Then head on over to the forums and make it known! Politely, of course.