I've read enough about Madness to know that it becomes a Force management nightmare. However, I'm toying with the idea of taking a point from 'Polarity Shift' and putting in 'Deathmark.' According to the information on ‘Deathmark’; "Death Field places a deathmark on affected targets, increasing the amount of damage the targets suffer from your next 10 periodic damaging abilities by 20%. Lasts 30 seconds," I could increase the output damage from 'Affliction,' 'Deathfield,' and 'Crushing Darkness.' Though I would lose a 20% increase in Alacrity, I already have 12% decreased cast time so I think this would be a good trade off. I'll have to give it a try first before I know for sure.
I don't have problems with force management running madness.