Honestly, i am think it is not possible.
The amount of mixes were too big to handle. Except as Spark240 said - Everydays Feedback 🙂
Indeed there's no necessary need to make every mix as new member, due there is no learning schedule at all.
What we should do in a year or two ?!
The only way i think, is to make "older" mixes if desired, post it (in proper forum) and get feedback from other members.
For new members: introduce first and be active member.
For "older" members: help new members and give as many feedbacks as possible.
Just my two Pfenning 😉