On my part I don't really see a point for your suggestion but your workflow may differ such a level that you are right.
Why do you find it so hard to see how it would be beneficial to be able to set a default star rating and color label on ingest? My workflow has any color label indicating there is still work to be done on a photograph. A color label is indicative of a particular stage in the process. No color label indicates that the work is all done.
I use star ratings to tell me how much I like the photograph and if I need to delete it. I need to rate the photos before I do anything with them. A no star photograph is one to be deleted. A photograph that has not been rated has a particular color label associated with it. So, I would like to ingest all photographs with a one star rating and a particular color label.
As Kirk pointed out, I can't change the default color of no color.
My workflow may be different than yours, but having the option to set star rating and color label on ingest is not at all unreasonable.
Scott