Havoc Macro - Demon\'s Bite (please provide feedback)

I switched off using Demon’s Blades as it seemed I was starved quite often in fights. I flipped to using Demon’s Bite and tweaked a macro accordingly and found that i’m almost never starved, survivability went way up in solo PvE content (and PvP), and damage output increased. Please let me know what you think.
Note: there are some PvP talents in the macro, but they wont interfer with PvEing

Sequences['DHH_2'] = {
-- This Sequence was exported from GSE 2.2.03.
  Author="Nyte",
  SpecID=577,
  Talents = "2313311",
  Default=1,
  Icon='INV_MISC_QUESTIONMARK',
  MacroVersions = {
    [1] = {
      Head=false,
      Neck=false,
      Belt=false,
      Ring1=false,
      Ring2=false,
      StepFunction = "Sequential",
      KeyPress={
        "/targetenemy [noharm,dead]",
        "/cast [combat,nochanneling] Blur",
        "/cast [combat,nochanneling] Nemesis",
      },
      PreMacro={
      },
        "/cast [nochanneling] Chaos Blades",
        "/cast Demon's Bite",
        "/cast [nochanneling] Chaos Strike",
        "/cast [nochanneling] Chaos Strike",
        "/cast [nochanneling] Felblade",
        "/cast [nochanneling] Blade Dance",
        "/cast [nochanneling] Fury of the Illidari",
        "/cast [nochanneling] Chaos Strike",
        "/cast [nochanneling] Chaos Strike",
        "/cast Demon's Bite",
        "/cast [nochanneling] Blade Dance",
        "/cast [nochanneling] Throw Glaive",
        "/cast [nochanneling] Chaos Strike",
      PostMacro={
      },
      KeyRelease={
        "/cast [combat,nochanneling] Chaos Nova",
        "/cast [combat] Eye of Leotheras",
      },
    },
  },
}