My damage completely drops off when I'm dead.
DoTs should break fear, I can trinket ONCE out of fear but the warlock has already cast a new one on me. Cloak works once a minute and for four seconds and is not 100% resistance, so it doesn't always work.
Pets go bye bye when Hunter's/Warlock's die, so should their dots.
Warlock utility in PvP is already huge, they could use some scaling back considering they are the original hero class.