I agree.  This really needs to be fixed.  It did not use to be a problem, now every time we create an estimate with a new customer the name is duplicated automatically in three spots on the customer record (First name, Last name, Company Name, and Customer Display name.  It is really annoying.  The workaround suggested below is not ideal because often times it is a business not a customer with a first/last name.  PLEASE FIX THIS QB!