We introduced a workflow for "cloud workers" creating a new product proposal and having it approved, in "A Workflow that Promotes Open and Flexible Planning."
In this workflow, there are some proposals that are eventually withdrawn during the process of going back-and-forth between task 3 (planning head approval) and task 3b (confirm send-back), and some proposals that are ultimately rejected by the executive decision.
Let's say you want an even more open and transparent environment, and make director opinions accessible. The below workflow allows board directors to freely submit comments, which are conveniently recorded with a time stamp.