I mean, don't get me wrong. Not every production requires a "full orchestra". I think, for example, Chicago's slim band is perfectly sized for that sinewy jazzy Kander & Ebb score. Similarly, I think 14 or 15 might have been the size of the Pippin orchestra and they sounded fantastic. I'm too young to have seen the original Dancin', but I will be seeing it in San Diego soon. It doesn't use a traditional Broadway score (or even many showtunes, right?), so perhaps 14 is perfect for the sound of Dancin'.