Things to think about before you call someone "Bad"

[Bourne_Endeavor]

I honestly feel the 24-man bosses should have, at minimum, a 13-15 minute enrage timer. Throwing bodies at a boss until you win 20+ minutes later is not good.

Famfrit: A wall of water slowly closing into the middle of the arena. If it reaches the middle, players take continuous damage (like Tidal Wave).
Belias: Maybe have a floor break every 30 seconds (you'll know what will break as it'll use the clock AoE marker).
Construct 7: Math Quiz returns one last time, however your HP does not reset back to what it should be.
Yiazmat: His 10% phase is kind of an enrage. His Rake-around-the-Rosies is almost (if not, guaranteed) a one shot.

Death Gaze in Dun Scaith actually does. And it's a wonderful wake up call for people. Not to mention, it puts some responsibility on the DPS whereas now you just throw bodies and eventually win. Sadly, it's this type of design which encourages complacency.