maybe a year or two ago, and i understand the logic, but done the correct way, i don't think its an issue.
think like the luxe and other macro-less guns. yes, technically they were made to be backwards comparable reg wise, but if the stock reg works pretty good ... no one cares. when was the last time you saw a luxe with something other than the stock reg?
so, provided you give it a barrel no one needs/wants to change ... i don't think people would really care what threads it was.
in other words: FREAK all the things.