Elsewhere in Shotgun it's easy to see Notes for a Version's linked entity. For example if I need to see the feedback that was given on the previous Version of my Shot, there are a few ways to do that.
It would be useful to have this sort of visibility in the Client Review Site. Oftentimes a client wants to refer back to the feedback they gave on a Shot in a previous review. Currently in order to do so, they need to access the different shared playlist rather than the one they are currently reviewing.