1) Make individual whammies for answers. Currently, whammies are active for all answers of the quiz simultaneously, however sometimes you only want certain whammies to activate on their respective answers, and overlaps unfortunately prevent the existence of quizzes such as 'Square Numbers - Whammies'. This could also be made to trigger code, causing a visual update on a map.
2) When getting an answer wrong (typing its respective whammy), make it impossible to get. This links to the previous suggestion, and it has it's own uses, Granted, it would discourage users as they wouldn't be able to get all the answers correct, but it does have its uses.
Anyways, those were my suggestions for revamping the whammies feature, what do you think?