"Ideally, Intuit would make such provisions in their product to accommodate situations like mine."

It's a Federal requirement; the IRS has these requirements.

"Individuals are able to efile with Turbo Tax - why not build that option into ProSeries?"

Because ProSeries is for Professional Tax Preparers, not DIY, and it has to do with the filing function by definition.

This is like asking: a trash truck comes up my block each week, so why can't I haul my trash to the Dump myself in a trash truck, if I buy one? Answer: you can buy a trash truck, but hauling is a regulated industry. You have to Comply.