Have you tried using OWASP ZAP? We're focusing on automation and feedback gratefully received. I'm also on the OpenSSF Security Tools Working Group and making security tools easier to use is definitely one of our priorities
Well, burp suite is a bit like some parts of ZAP :)
Theres an overlap, but ZAP is completely free and open source. It was originally a fork of Paros (now much extended) which actually predates burp.