I don't think that would work, as the membership level fees are used for renewal period to generate invoices. It wouldn't help at all if they were set to free.
We just launched integration with Integromat platform, which helps to build automated workflows. We also provide several templates for quick start, and one of them demonstrates how to send event attendance certificates as professionally looking PDF files.
You can try the integration by this link https://www.integromat.com/en/integration/2303-send-pdf-certificate-to-event-attendees
I agree -this would be a huge benefit! We do conference certificates that people use for continuing ed credits. Would LOVE to have them automatically generated from the attendee list.
I will add that YES - this is a critical feature that WA is missing. It's making our membership renewal process extremely tedious....the opposite of what I was hoping for.