I updated my Articulate Storyline 360 a few days ago to version 3.79.3092.0 and was pleasantly surprised to see an improvement to the review workflow...review comments that appear directly within the Storyline project.
Publish your project to review 360.
Return to the Storyline project and notice that there's now a Comments window.
Click the Review Request button.
Add your reviewers and click the Send request button.
Your reviewers will receive a review invitation email, as shown below.
Reviewers click the Go to Review 360 button and add comments as shown below. When done, reviewers click the I'm done reviewing button.
The review comments appear in the Comments window within Storyline.