Riot blade should be AoE. A cone in front of you. I mean a riot takes many people to work, sounds like riot blade could be riot suppression..
But seriously, it would help a lot with group pulls. Flash spam, and riot blade to keep up mp and maintain a little aggro on everything when not flashing.
Also agree about the enmity modifier on circle of scorn. It feels like the skill should have that, and I often forget that it in fact doesn't.