pushing forward with @AnthonyKumnick's request as it's been 3 years and whilst there was a response from Nintex that there was no intention of doing this, but to still put forward feedback, you can no longer vote on the issue but this is important and I believe should be looked at:
"As a publisher. Once I've declined a process I want it removed from my list...i.e. it should be automatically sent back to "In Progress" status.
What I'm having to do now is go in and edit and save the process to remove it from the list."