DPS and Tanks who Line of Sight Me. (The new map is especially bad for this. Healing on that new map is as cancer as cancer gets.)

DPS players who charge the enemy team without popping any defensive CDs, then spam "Nice Job" when there's 4 minutes on the clock. (Focus less on salt, focus more on making a comeback.)

Players who ignore "I'm All Out of MP!" then spam "Nice Job." when they charge in and die rather than playing defensive.

The entire "medals" mechanic.

Machinist pre-nerf.