There is no input validation when creating Hosted DKIM records. If I choose TXT and enter gibberish and PowerDMARC will publish the record. I can even choose to enter a public key, enter gibberish and it will be published.

Public keys should be possible to verify with a regex. TXT and CNAME records should be basically verifiable with a regex and the verification could be enhanced with additional DNS lookups.

The goal with adding this verification, would be to prevent technicians from making silly mistakes. We don't want technicians to accidentally paste a public key into a TXT entry or accidentally paste a password into any field and then publish it.