Requiring Comments with Project Approvals/Denials

In the My Updates section, which is extremely helpful, it would be fantastic if, where someone would see the red and green buttons to approve or deny, if on the back end, we could customize the approval/denial setup to require that with either selection of approve or deny, the approver/denier would be required to enter a text explanation.

(I wish that there was an option to more or less choose to turn such a feature on or off, to prompt approvers to give feedback.)

This would help make sure, for auditing purposes, there was a record of explanation behind an approval.