I understand what you mean about 'debuffs meaning more' when you have undergeared tanks, but I'm not kidding. Forced Obedience literally does nothing to help a tank (or anyone) dodge heroic DoV content, and I can't imagine why you would need it solo. It might do something if you took the AAs that make it also debuff the mob's defenses, then you could hit more. I have an SK that I mained for quite a while, and the fact that avoidance was completely meaningless (except uncontested Block) all throuhg SF and DoV has been a pet peeve of mine.