Hi gussie -
I strongly prefer a 4-man rotation, but it took 3 seasons to pursue the right kind of starting pitchers to do it: DUR 28+, STA 90+. With pitchers like that, there's no real need to reduce pitch counts. Some of my guys routinely are set at 110/125, and barring injury they get really close to 300 innings on the season.
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While it's not strictly necessary to have all 4 pitchers meet the DUR requirement, it saves a lot of headaches and time. If just one pitcher has a STA of 20, for example, then the rotation might require regular tweaking.
Last season, 3 pitchers with 20+ wins. I don't expect the system to always work so well, but it was a nice proof-of-principle.