So you are saying if i say Fight Adds False, it wont do RoF, SoC, but dot everything up? or am i mistaken?
Unless it radically changed since I last used it (which sounds like ski didn't modify this behavior that much yet except to add in RoF support):
1) If Fight Adds = True and Use SoC = True then it would spam cast SoC whenever you 3+ targets on your active list. In solo mode it would try and look for multiple targets to pull, pull them, then spam SoC.
2) If Fight Adds = True and Use SoC = False then it would spam cast your normal cast queue DoT's against all targets in active list. In solo mode it would try and look for multiple targets to pull, pull them, then tag them all with all DoTs then burn them down in a fairly efficient, non-AE, manner.
3) If Fight Adds = False then it will just focus on the primary target until it is dead and then immediately switch to the next best target on the active list. Solo mode behavior would be the same. There are times where it would cross DoT (generally if you were getting beat on), but it wasn't as aggressive as when Fight Adds = True.