I support that idea.
Plus, the cauldron is either misleadingly labeled or bugged, because what I've just described doesnt work. And the way I interpret it's meaning it should. Otherwise the cauldron is completely useless...
(open picture in new tab to see what I' talking about).
If, however, the cauldron just adds 5% of the 40% (2%) to the potion effect, I'd need 5 debuffs on to be able to do this.
I got weaken, and corroded, I guess I can add poison and curse to it, and possibly slow. That's way too much effort just to buff a strat that certanly doesn't need any buffs...