Demos are already and probably one of the OP classes from the start of the game in PVP. They just have too much of everything except armor however the speed buff they get from using hands of the underworld while their targets gets a snare combined with their instant, almost instant high dps spells or waves of flame makes almost every fight turned in their favor. Example:
You approach demo he uses insta hellfire stream + detonation for the KB (both are instant). Then he uses waves of flame that take away 1/2 or more from your HP if he has good gear and ring of fire. Before you get up he uses HoTU and starts bunny hoping while dpsing in the same time. The result is you cant fight him as a meele and you cant run away. Give us a fighting chance please. Meeles should have the advantage in close distance fights and not the other way around...