I agree. This would be a useful addition. In our case, the faculty will now have the ability to display SIS ID (yay!) which is the student ID # in our case. There are a number of situations where the faculty member will have the student ID # and want to find them in the gradebook. Being able to sort on that SIS ID field would then make finding that student much easier.
This would be useful for us, as well, especially if my other "ask" -- having the default email address as a secondary field -- could be possible.
This idea is not part of the current scope of the New Gradebook. Please submit your idea through https://community.canvaslms.com/community/ideas?sr=search&searchId=189da491-8f5d-4b72-b2f3-9c7dea0bc...