Poison – Hunter
Perhaps one of the more controversial choices would be a sub-class based around poison and infusing their weapons with damage over time effects like the Thorn hand cannon. Letting users deal most of their damage via poison could add an interesting aspect to combat, as it would turn boss battles into wars of attrition. Sure, it’d be a slower method than say using a Thunderlord, however, it would allow for unique experimentation within team compositions and solo play. Shifting to PvP, being able to block off entire areas via poison gas grenades could act as a nice area denial effect and help teams hold off objectives under sustained fire.
Now balancing this with the various sub-class powers would be rather tricky as the Thorn was a weapon that had to be nerfed due to its sheer killing power. Yet, being able to infest your enemies with a plague like toxin seems too good to be true, especially if you can customize the toxin’s effects via the various nodes.