I can't seem to understand how QB determines what features are necessary to be added and which are not.  If you have so many people asking for this functionality, don't you think that it would be beneficial to have.  It is used by many companies for many reasons and provides accurate record-keeping.  After 5 years of asking, how do you not see the need?  Is it that your developers don't know how to add it?  Can you provide us with a concrete answer as to whether or not the request is even being considered?