Counterproposal Code Review

Is there a feature in the works for creating something like a counterproposal type code review? The idea that, instead of the three choices of "Author", "Reviewer" and "Observer" for adding a type of participant, because it is a counterproposal type code review, the two choices would be "Author/Reviewer" and "Observer". Then, instead of the phases of the review being "PLANNING", "ANNOTATION", "INSPECTION", "REWORK" and "COMPLETED", they would be "PLANNING", "ANNOTATION", "INSPECTION/COUNTERPROPOSAL" and "COMPLETED" with the last "Author/Reviewer" to counterpropose or upload changes being disabled from clicking the "Send to Completed" button and with the review being sent to completed when all of the others in the "Author/Reviewer" role send it to completed.  I mention this because I was recently a reviewer on a code review where there were so many lines to comment on in a .js file and in a .jsp file, that it would have been easier to just counterpropose changes in the manner described above.