IPc Integrative Design Process

I'm reading the credit language and I'm very unclear as to what a project team's submission for review would need to include and to what standard it will be reviewed. I understand that integrative design isn't a clear yes/no checkbox kind of credit, and we're not getting a list of required documentation at this stage for public comment. But I'm having a hard time seeing how this will be a "reviewable" credit, i.e. one where project teams and reviewers have a shared and solid understanding of what makes a process "integrative," "diverse," "interdisciplinary" etc. enough, or have performed enough "relevant analyses," to qualify for credit achievement.