I have a few suggestions and you said feel free to make suggestions in the rules so here are my suggestions: you should make the hint column say 'quote' or 'quotes' and then for the answer column make it say 'person' or something and when you put that black dot thingy or whatever you should just do it every time it changes a quote not every time it changes a quote and at the end of ones with multiple quotes you should remove that dot and also I suggest doing only 1 quote on for each question and stuff also for that question with (bonus) on you should make that in all capitals and make it the last questions but if it is to say that it is a bonus questions but if it is not then what is it for
I made a similar quiz (https://www.jetpunk.com/user-quizzes/1325832/phineas-and-ferb-characters-by-quote), but this one has WAY better quotes. It's also a lot harder though.