During WP runs, my comm goes to any whm who didn't spam holy, or to tanks that knew where to pull enemies to avoid sir stabby the 14th's patrolling friends~
Dps get my comm /if/ they take note of tank's max health and monitor how many stacks of rancor the king has~

for most other dungeons -
A) anyone friendly
B) happy to explain boss mechs to new players
C) anyone who played their part particularly well
D) new players who didn't try to hide their lack of experience and who were happy to try different tactics. (One such instance was asking a CNJ to augment killing the fire sprites in halatali's final boss)