I agree that having checked buffs be large is a better approach, but the structure sets a buff's value to "true" if they are filtered, that is, unchecked. Doing it the other way around means all buffs that are not in the list (food buffs, other class buffs, etc.) are enlarged as well. That's one of the reasons I'd like to make an entirely different configuration section for this behavior but I haven't really had the time to figure out how quite yet.
That's exactly what I have in mind. Now I'm playing with options to accomodate additional data into them.