Improve my quiz : random & results

Hello everyone,

I need your help today on many topics. First of all, I would like to set up quizzes with questions in banks each corresponding to a theme. The idea would be to be able to define the number of questions set at random in each bank and also to display the questions in a random order from one bank to another.

For example, it if I have 3 banks A, B and C, I would like to have question B2, A4, C1, etc. 

I would also like to set up playoff issues. For example, if the user answers a question incorrectly, they can not answer the other questions and a message appears telling them what to do. For that, I imagine that with the layers I can succeed to realize what I wish. What do you think ?

Finally, I want to display results by bank on the same slide.
For example, if I have 3 banks A, B and C I would like to get a slide with:
- Bank A results: 80%
- Bank B results: 50%
- bank results C: 100%

I have one last question about exercises created in free format. Is it possible to obtain a result as for the questions noted type multiple choices with this kind of exercise?

Thanks a lot in advance for your help !