Soul Comprehension: When Life Force is 50% or greater, F1 will consume 50% of LF and provide 3 stacks of stability for 1 seconds and 1500 toughness for 2 seconds.
This is just a simple concept to enable some aggro control and tanking ability to Death Magic. The trait line will still be an abysmal dps loss for all but MM builds and, of course it will mess with minion aggro control but it is a start.
LF generation will become critical for a Necro-tank so dps takes a back seat, as it should when tanking.
ps, Shroud flashing comes back with a purpose.