Right handed batters have hit a little better than lefties against Sonny Gray over his career, not so much the last 2 years. And I agree giving Bader the opening start in his old home park is a nice move. He should get a nice greeting.
I have to admit that I expect about 81 games (half a season) worth of playing time from each of the "Three Gimpateers". Anything more than that is gravy. Unfortunately in Correa's case he is highly paid for a full season's worth of action.
Maybe put a treadmill next to the dugout steps that a hitter has to use for 2 mins before hitting the on-deck circle. I just can't see pulling a hammy in a spring training game running to first base.