So, debilities. The rules as written say: “You can only have each debility once. If you’re already Sick and something makes you Sick you just ignore it.”
Am curious why that rule is there. It seems like an obvious option to interpret a vampiric attack, for instance, as inflicting the weak debility, but it would be strange if a vampire can’t affect you twice. Or, say, each day in the nonEuclidean plane of Madness, you grow increasingly confused. In general, if you can normally have a range of modifiers for ability from -3 to +3, why shouldn’t debility be able to stack likewise?
Descriptionwise, it might be boring to just stack “take another -1 weakness”, but you don’t have to do that – you could presumably describe increasing pallor, and rubbery legs starting to buckle under you, and so on.
Does that sound like a bad idea?