I'm an XD newbie and currently working as an Experience Designer with a UI/UX Designer and a 3 person Dev team for a Start-up in Sao Paulo. I love the ''design review" feature in XD and we have been using comments as a team with great success. However, I feel a major lack of options for a crucial collaboration moment: developing, referencing and editing our flow.
For example, someone leaving feedback for our screens on the dev team may constantly ask "what is the context of this screen?" Even I lose track and have to toggle between views in the review feature and the main editing canvas to remember which screen leads where.
Thanks for reaching out and taking out time to share your observation. It does sound like a great feature request so I will pass on your feedback to the Product team and you can do that too here: https://adobexd.uservoice.com/
You can ask to pin areas with mark. May be that can help
To pin or move your comments to indicate specific areas in the artboard, click Place a pin, and then click the specific location in the artboard. Type in your comment and click Submit to submit the comment. You can also switch from a regular comment to a pinned comment. XD. assigns a number to every pinned comment