I want to tackle Santa Fe just to see how it plays and what it takes to succeed there. It'll be a new team so I'm getting to know the talent. I'm already planning on looking for pitchers that a) avoid bats thru K's and/or b) keep the ball on the ground. But more broadly than that, I sense that there has to be a way to take a + play, and assume that in a neutral park, with a league average pitching staff, it prevents x runs. (I suspect about 2/3rds of a run) Then modify that, for example . . .

With a superior pitching staff (and/or pitchers park) there are fewer baserunners, therefore a greater likelihood of + plays occuring when they are worth less, maybe .5 runs. Conversely, when there are more baserunners due to park or inferior pitching, + plays will occur more frequently when there are runners on base, therefore will be worth more, perhaps as much as a full run. Once I can get a rough handle on the modifier it, will help me compare whether the glove man with a below average bat will earn more in runs prevented than he sacrifices in runs scored.