First step would be to collect data that is trust worthy regarding potential adverse reactions. And for that the barriers that stigmatize such reporting should be removed.

Basically, for starters, doctors should be free to report the events they see without getting labeled "Anti-vaccine doctor" or fear of getting their licence revoked.

When such barriers exist, no one could/should trust the product.

What don't you like about current reporting such as VAERS? Where do you see the barriers there specifically? Do you have examples of doctors getting their licenses revoked for reporting something?