I'm afraid it makes things difficult to understand if you "mix up" the four Choice, Questionnaire, Quiz and Lesson activities.
You write "Questions are still pretty similar between Quiz and Questionnaire usage-- the difference is what the Activity module does with the user response (score and provide feedback vs. record and collate)."
I totally disagree, again looking at the purpose of each activity. The goal of a Quiz is to assess/evaluate a student's knowledge, and therefore to score their answers, which can be evaluated as more or less "correct".
In the Questionnaire (or the Feedback or the Survey) activity, there is no notion of evaluation or correctness. So the difference is not only what you say, i.e. what the activity does with the user response, the fundamental difference is in the nature of the questions you ask. Let me illustrate.
- Q1.- What are 2+2?
- Q2.- How old was Mathusalem when he died?
- Q1.- How many cars do you own?
- Q2.- How old are you?
It seems obvious that those are totally different, non-interchangeable kinds of questions. It would not make any sense to ask the Quiz questions in a Questionnaire or vice-versa. Hence the idea to keep in the Questions bank those two kinds of questions so they could be used in either activity does not make sense either.
2.- " ... it would be helpful for Lesson (or some other similar activity) to be able to act as either a Quiz or a Questionnaire, per page. I.e., given a user interaction defined on a Lesson page as either Quiz or a Questionnaire behavior, the interaction should provide a score and feedback, or collect the data and possibly provide an immediate collation and summary to the participant, and either way a navigation action may be triggered or presented as an option."
I think what you want here is an extension of the current Moodle Lesson activity, which at the moment has all the features you want, except the "immediate collation and summary". If you could provide a scenario including those 3 features, I'd be quite interested in reading it.
The 3 features being:
a. "Traditional" questions (MCQ, Matching, Short Answer, etc.) which can be marked as correct/incorrect and given a score.
b. What is called "Question page", i.e. a page with 2 or more choices which "branch" the user to different routes.
c. Your new feature "collation and summary", which at the moment I fail to see what it would look like and implemented.
Looking forward to your "scenario",