It is confusing for our teachers that there exists two types and the possibilities are somewhat similar, but not.
It would be nice to have one quiz tool. The possibility to use new quizzes in mastery paths would be great.
Thanks for sharing this idea. New Quizzes is currently scheduled to become the only quiz tool in 2021, and you can see details of the development timeline at New Quizzes Timeline Overview - Canvas Community .
With regard to your second suggestion, please add your support to the conversation currently underway at Allow Quizzes.Next assessment to be initial assessment for Mastery Paths.
As this is already on our timeline, we've archived the idea.
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