Good to see some more open source competition in this space. SoapUI had most of those features some 15 years ago. I never understood why Postman became so popular, my current team even throws money at them.
Basically because of "blah but it is Java!" kind of argument.
SoapUI is great.
And the "SOAP" part of the name is not helping either.
I found it uncomfortable to watch it making a request once someone pointed out to me that it highlighted letters in the order SOPA when waiting for a response