If this was an invoice or purchase order being sent from Intuit would you accept the return address being my company address? 

Never. Why do you think this is acceptable to any of your customers?

Quickbooks is fantastic, but this is a basic feature that EVERY user will be unhappy about and make this feature simply not usable.

Same thing with the issue of not being able to add an SKU column to an invoice. No invoice sent by any company will sent without an SKU. Having to add the SKU to the description is not an acceptable option.

Result is that essentially quickbooks PO creation is a waste of time as you need to recreate the PO in other software and send via your own e-mail system. 

This should be recognized as an essential and urgent BUG FIX. This is not an upgrade topic to any business that issues Purchase Orders.