Either way, from my experience, the new ISS added a significant amount of damage to Knight/Warlock. My suggestion aims to nerf overall dmg by 10% (209/190).
you know that those buffs works more than only the flat number shows.
In my opinion and as far what I observed comparing to all other main-classes, lowering the dmg results in the same dmg like pre-ISS-patch.
Every main class has minimum 1 class combination, that deals the same or even more dmg like k/wl. that's why I don't get your point. Would really like to see some sample scrutis, why you think in that way