It was funny watching my Sim break into an Uncontrolled Hissing fit right in the middle of his Wedding Vows, but it wasn't funny watching the screen light up with a bunch of red - and people fly text as 10 wedding guests lost 5 points of friendship with his all at once.
Now, there will still be the animations and interruptions for taking the weakness, but no loss of friendship.
This Mod will most likely conflict with any mod that alters Uncontrollable Hissing or removes Vampire Weakness Points (not tested).