Make the "Start Active Players" button move Players marked as Active in for Players marked as Inactive
Currently, the "Start Active Players" button appears to only take into account if a player has a game scheduled. It does not consider whether or not the players are flagged as either Active (the green tag for "Probable Starter" or "Batting 3rd", for example) or Inactive (the red X for "Not in Starting Lineup"). In should take these into consideration, giving lineup priority first to Active/Green players, then to players with NO tag (so unknown status), then to players with the red X (as a batter not in the starting lineup might still pinch hit). This would especially help with Starting Pitchers, who rarely actually play in games when they are not the "Probable Starter", even though the current metrics often leave such players in the starting lineup while others tagged as a "Probable Starter" remain on the bench.
Kameron Cole commented
You need to change the "start active players" algorithm. When a relief pitcher has a game, and a starting pitcher has a game but isn't starting, the starting player often gets put into the lineup. The relief pitcher with a game who has a chance to play sits on the bench where as the starting pitcher who's not starting that day gets put in the lineup. The relief pitcher has a chance to play, but the starting pitcher who's not starting has almost a 0% chance to play. The relief pitcher with a game should always be started over a starter who's not starting that day.
I'm glad someone suggested this. Today, 4/25 it appears that the feature has elected to start Eric hosmer( on paternity leave) at 1b,& leave Trevor Bauer, my only SP going today, on bench.