What part of the process do you want to streamline?
Getting them assembled would probably streamline it the most. Assuming your PCB is up to the task, you could get hundreds made every day.
By "up to the task" I mean that it is panelised, and has the special markings which help the pick and place machines determine the exact location of the board.
If you're interested, Dave at eevblog has produced a number of videos on the subject.