This is just the Subject field from the SR...on the Request Offering use an update block to reset the Subject to Subject + the new starter name which you can pull from the request offering field
Edit: The field is called Name/Summary in the update block but is subject in the database.
Thanks for the help. Final expression which places the Production name, Users First and last names along with the Subject on the subject line:
$(Subject + " - " + GetSRPValue(RecId, "DepProdName") + " - " + GetSRPValue(RecId, "FirstName") + " " + GetSRPValue(RecId, "LastName"))