Yes, this would be a great feature for us. We have so many times that a customer changes their mind on something or we realize something wasn't rang in correctly and to not be able to edit the KDS screen slows us down and makes for more errors.
I know we can communicate with the kitchen but if they are multiple pages deep on tickets, by the time they get to the ticket in question, they most likely forgot. Having the actual changes on KDS would prevent these issues