Hi there! In a request queue details, you don't have to show planned completion date at all...or include any date field in the custom form associated with your request. Could it be as simple as that?
In a request form here are the queue detail options I'm referencing:
If this isn't what you're after and you're proposing new functionality altogether, it's best for you to submit an Idea here instead of as a Question. Or if this helped you out, please mark correct to help others : )
If this helped you, please mark correct to help others : )