Originally Posted by
Lambdafish
This isn't a rule though, you are too small a sample to say for sure. I usually get a lot of commendations when I help people (albeit as tank or healer), so that completely skews your theory. The problem is that commendations aren't an indicator of how helpful you were in an instance, its an indicator that someone in a dungeon thought you deserved a commendation, and to me, that's working as intended.
On a separate note, I agree with the OP that it should be 500 comms, but I think the reason that it isn't is because people who joined in HW wouldn't have gotten that many yet, meaning the content would be exclusive to ARR players for a while. I don't think that is a good excuse, but it's what they have chosen. What I will be more interested to see is how harsh they are towards players who aren't good or helpful mentors.