This is a quality of life change as the notification feed is great way to keep you informed of different events. It would be fantastic if it would also gave you notice when a blueprint project is finished (production, research, reaction, etc…) like everything else.
Sometimes when you have a long running research project or multiple production runs it would be really useful to have a notification pop up when it finishes. Also, its useful when you login after a few days absence to see a reminder that your project is finished.
TBH, i was a bit surprised this wasn’t part of the notification feed already.
EDIT: Added this to the ‘small things’ thread under player ideas too.