I look at the pitches that the pitchers deliver and their effectiveness along with LD/GB/FB and Hard/Medium/Soft Hit rates.

Bullpens are tough to simulate in any model because there is so much rotation/variability within the bullpen. Trades, shuffling between AA/AAA, role changes, injuries, etc. All you can do is just select the pitchers who have the highest usage rates from the bullpen and go from there. Although pitch mixes are sometimes indicative of the pitching coach, the most extreme example was Dave Duncan when he was with the Cardinals... nobody was throwing changeups on those teams, curveballs were the changeups.

It is tough to imagine the Brew Crew making the World Series, but winning the NL Central is still within reach. However, do the Brewers brass want to make the move to win NOW before the trade deadline? If making the NLCS is the goal and getting knocked out in 5 by an NL West team is the objective, maybe. They can't gut their farm system like the Red Sox and Tigers did. The Tigers are still trying to recover and the Red Sox completely overhauled.