Noticed this thread over on Reddit...
For those that don't want to click it, the short version is the poster did an experiment over several runs with EX roulette dungeons. He received more comms on runs where he did not DPS but kept everyone topped up, and less when he DPS'd and let HoTs do most of the healing work.
My previous perception had been that cleric stancing makes no difference but it looks like it actually hurts our standing with the party.
Thoughts, comments?