harley78, don't take offense to my response just as my response didn't directly answer your question. I live for a good debate on any softball subject. My concern is as clear as the nose on everyone's face (assuming everyone has a nose). I prefer we not attach a stigma to positions, especially in modern day women's softball. Everyone should be aware that the game has evolved to a level where we shouldn't be minimizing any position. Thank yourself and the other coaches and parents for helping young ladies learn how to play this game to an all time high. Thank you players that have the desire to take the game to the top!
I understand we need to position players to get the best defensive outcome. Each position could be ranked in order of importance but there are variables that need to be considered. As mentioned, your pitching staff should be a factor as well as pitch calling. You simply cannot say that any given positions are more important without looking at the variables.
However, when I'm involved in tryouts, my ranking to fill positions are as follows; Pitcher, catcher, 3rd base, 1st base, outfielder, 2nd base, shortstop, outfield, outfield. The first 4 positions on my list handle the ball more than anyone else so they have the most opportunity to have a positive effect on the defensive outcome.
I refuse to minimize any position but we deal with people being a variable and certain facts cannot be ignored. Outside of pitcher and catcher, others better be able to get on base somehow.