Your most *frustrating* aspect of the game?

There have been dozens of thread here and on reddit since rancor times. The only comment I ever remember from CG is "not all players need the same gear". While this is true,just because of the huge similarity of gear requirements between toons (mkIII carbantis, mk5 stun guns and the cufflings), in the middle-long term all players run short on certain gear while start to accumulate barely used gear (some challenge gear, MK IV carbantis). On the same time it seems that MK IV carbantis have the same drop raid in the raids as MK III carbantis have, nullifying the meaning of rewards in raid.

While sometimes wonders happen, seeing that another raid was rolled-out with the same flawed gear drop, I have give up hoping.